Petra Kvitova's statistics and ranking Thread (Updated to Beijing) - TennisForum.com

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post #1 of 79 (permalink) Old Jul 8th, 2011, 01:14 PM Thread Starter
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Petra Kvitova's statistics and ranking Thread (Updated to Beijing)

All these are made from Petra's official WTA tour profile here in the activity section.

General H2H - Main draw only


<<Entries : Arvidsson - Beijing 2011>>

Code:
Names	                     Nat	W	L	T	PCT
---------------------------------------------------------------------
Agnes Szavay	             HUN	1	0	1	1,000
Agnieszka Radwanska	     POL	2	0	2	1,000
Ai Sugiyama	             JPN	0	1	1	0,000
Aiko Nakamura	             JPN	1	0	1	1,000
Akiko Morigami	             JPN	1	0	1	1,000
Alberta Brianti	             ITA	1	0	1	1,000
Alexa Glatch	             USA	1	1	2	0,500
Alexandra Dulgheru	     ROU	1	1	1	0,500
Alisa Kleybanova	     RUS	2	0	2	1,000
Alla Kudryatseva	     RUS	1	2	3	0,333
Alona Bondarenko	     UKR	1	1	2	0,500
Ana Ivanovic	             SRB	0	3	3	0,000
Anabel Medina Guarrigues	ESP	2	0	2	1,000
Anastasia Pavlyuchenkova	RUS	2	2	4	0,500
Anastasia Rodionova	     AUS	1	0	1	1,000
Anastasja Sevastova	     LAT	1	2	3	0,333
Andrea Petkovic	             GER	3	4	7	0,429
Andreja Klepac	             SLO	1	1	2	0,500
Anna Chackvetadze	     RUS	1	0	1	1,000
Anna Koethavong	             GBR	3	0	3	1,000
Anna Lapushchenkova	     RUS	3	1	4	0,750
Anna Lena Groenefeld	     GER	1	1	2	0,500
Aravane Rezaď	             FRA	0	1	1	0,000
Ayumi Morita	             JPN	0	1	1	0,000
Barbora Zahlavova Strycova	CZE	2	1	3	0,667
Bethanie Mattek-Sands	     USA	2	0	2	1,000
Camille Pin	             FRA	0	1	1	0,000
Carla Suarez Navarro	     ESP	2	0	2	1,000
Caroline Wozniacki	     DEN	1	3	4	0,250
Chanelle Scheepers	     RSA	3	0	3	1,000
Daniela Hantuchova	     SVK	2	0	2	1,000
Dinara Safina	             RUS	1	0	1	1,000
Dominika Cibulkova	     SVK	3	0	3	1,000
Ekaterina Makarova	     RUS	1	0	1	1,000
Elena Baltacha	             GER	2	1	3	0,667
Elena Dementieva	     RUS	0	1	1	0,000
Eleni Danilidou	             GRE	1	0	1	1,000
Flavia Pennetta	             ITA	2	3	5	0,400
Francesca Schiavone	     ITA	0	1	1	0,000
Galina Voskoboeva	     KAZ	1	0	1	1,000
Greta Arn	             HUN	1	0	1	1,000
Iveta Benesova	             CZE	3	1	4	0,750
Jill Craybas	             USA	2	0	2	1,000
Julia Görges	             GER	0	1	1	0,000
Julia Schruff	             GER	0	1	1	0,000
Julia Vakulenko	             UKR	1	0	1	1,000
Kaia Kanepi	             EST	3	2	5	0,600
Karolina Sprem	             CRO	0	1	1	0,000
Kateryna Bondarenko	     UKR	1	2	3	0,333
Kim Clijsters	             BEL	1	2	3	0,333
Kirsten Flipkens	     BEL	1	1	2	0,500
Kristina Barrois	     GER	0	1	1	0,000
Ksenia Pervak	             RUS	1	0	1	1,000
Li Na	                     CHN	1	1	2	0,500
Lucie Hradecka	             CZE	1	0	1	1,000
Mandy Minella                LUX        1       0       1       1,000
Maria Kirilenko	             RUS	0	2	2	0,000
Maria Sharapova	             RUS	1	1	2	0,500
Marion Bartoli	             FRA	0	2	2	0,000
Marta Domachowksa	     POL	0	1	1	0,000
Martina Müller	             GER	1	0	1	1,000
Melanie South	             GBR	0	1	1	0,000
Michaella Krajickek	     NED	1	0	1	1,000
Nadia Petrova	             RUS	1	0	1	1,000
Nuria Llagostera Vives	     ESP	2	0	2	1,000
Patty Schnyder	             SUI	1	1	2	0,500
Pauline Parmentier	     FRA	2	0	2	1,000
Rao Sunitha	             IND	0	1	1	0,000
Roberta Vinci	             ITA	1	0	1	1,000
Sabine Lisicki	             GER	0	1	1	0,000
Sally Peers	             AUS	2	0	2	1,000
Samantha Stosur	             AUS	2	0	2	1,000
Serena Williams	             USA	0	2	2	0,000
Sofia Arvidsson	             SWE	1	2	3	0,333
Sophie Ferguson	             AUS	0	1	1	0,000
Sorana Cirstea	             ROU	2	1	3	0,667
Stefanie Vögele	             SUI	1	1	2	0,500
Stephanie Cohen aloro	     FRA	1	0	1	1,000
Sybille Bammer	             AUT	1	0	1	1,000
Tamira Paszek	             AUT	1	0	1	1,000
Tathiana Garbin	             ITA	2	0	2	1,000
Tatiana Perebynis	     UKR	0	1	1	0,000
Tsvetana Pironkova	     BUL	3	0	3	1,000
Vania King	             USA	2	0	2	1,000
Varvara Lepchenko	     USA	1	0	1	1,000
Venus Williams	             USA	1	0	1	1,000
Vera Zvonareva	             RUS	2	2	4	0,500
Vesna Dolonts	             RUS	2	0	2	1,000
Victoria Azarenka	     BLR	3	2	5	0,600
Virginia Ruano Pascual	     ESP	0	1	1	0,000
Virginie Razzano	     FRA	1	0	1	1,000
Yanina Wickmayer	     BEL	4	3	7	0,571
Zarina Diyas	             KAZ	0	1	1	0,000
Zheng Jie	             CHN	2	0	2	1,000


Total	                      94	115	74	189	0,608
Code:
Winning H2Hs (>50%) 53
Neuter H2Hs (=50%) 11
Losing H2Hs (<50%) 30

Génie - Victoria - Kristina.

Last edited by Vikapower; Oct 13th, 2011 at 08:50 PM.
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post #2 of 79 (permalink) Old Jul 8th, 2011, 01:18 PM Thread Starter
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Re: Petra Kvitova's statistics and ranking Thread (Updated US Open)

Detailed H2H


I. By nations

II. Against actual 10 and ex-top 10's present in top 100

III. Against actual Top 10 and Top 20 : Here.

IV. Against Grand-Slam champions

IV. Against ex-#1's or actual #1's
Attached Images
File Type: png H2H vs top 10_2_number ones.PNG (8.0 KB, 7 views)
File Type: png H2H by nation.PNG (21.7 KB, 2 views)
File Type: png H2H vs top 10_3 Grand Slams.PNG (8.6 KB, 2 views)
File Type: png H2H vs top 10_1.PNG (33.5 KB, 2 views)

Génie - Victoria - Kristina.

Last edited by Vikapower; Oct 13th, 2011 at 08:17 PM.
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post #3 of 79 (permalink) Old Jul 8th, 2011, 01:28 PM Thread Starter
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Re: Petra Kvitova's statistics and ranking Thread (Updated US Open)

General record - Main draw only


- All matches by Petra : played in 3 sets.
- All matches played by Petra engaging a tie-break.
- All lefties Petra has faced since 2006. (When available)
- All matches played by Petra after winning the first set (main draw).
- All matches played by Petra after losing the first set (main draw).

**UPDATED**




(**) After winning or losing first set : Main draw only, qualifying included and WTA tour.
(**) vs. right/left handers : when info is available.


Génie - Victoria - Kristina.

Last edited by Vikapower; Oct 13th, 2011 at 08:43 PM.
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post #4 of 79 (permalink) Old Jul 8th, 2011, 01:32 PM Thread Starter
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Re: Complete stats for Petra Kvitova

Detailed record by events and surfaces, indoors/outdoors


Majors



Details : Here.

Premier events



Details : Here.

International events



Details : Here.

ITF events



Details : Here.

---

Record in Fed Cup

Win/Loss and by events, surface and rounds.

Génie - Victoria - Kristina.

Last edited by Vikapower; Oct 13th, 2011 at 08:45 PM.
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post #5 of 79 (permalink) Old Jul 8th, 2011, 01:50 PM Thread Starter
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Re: Complete stats for Petra Kvitova

WinLoss comparision between Petra and the other 89-90's Generation

NEW ! Anastasia Pavlyuchenkova

NEXT UPDATE After Beijing 2011.



Graphs

- Main draw participation
- Highest winning % by events
- Win/Loss comparison by events
Attached Images
File Type: png Highest winning % by events.PNG (55.4 KB, 3 views)

Génie - Victoria - Kristina.

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Re: Complete stats for Petra Kvitova

Petra's ranking breakdown - October 10th.


Ranking history 2010 2011

Weeks in top 10 2011


Génie - Victoria - Kristina.

Last edited by Vikapower; Oct 5th, 2011 at 09:20 PM.
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Re: Complete stats for Petra Kvitova

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post #8 of 79 (permalink) Old Aug 4th, 2011, 04:17 PM Thread Starter
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Re: Complete stats for Petra Kvitova

Petra's game by the numbers...




Génie - Victoria - Kristina.

Last edited by Vikapower; Sep 19th, 2011 at 06:23 PM.
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post #9 of 79 (permalink) Old Aug 4th, 2011, 09:57 PM Thread Starter
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Re: Complete stats for Petra Kvitova

Petra's game profile in majors...


Quote:
First, I'm going to describe what I've done here and what incited me to do so. As we all know (I guess), tennis is more than than the statistics boxes that the WTA just gives to us match after match in other words tennis is much more than just plain winners and unforced errors. For facts, just check out the total points of any player in question it includes the forced errors yet, they never get referenced into the statistics boxes. So why this flaw !? Why make the statistics so "meaningless" if all the components are not included !?

So that's where I took my curiosity into hand and wanted to know for Petra if her game ONLY consisted of hitting winners left and right so as a good amount of unforced errors, was her game only resumed to shotmaking or was she also good at constructing points, putting the opponent under pressure... without even hitting that much winners from the back and that's where this sheet came into mind.

I. Forced error - The notion of forced error, What is a forced error ?

A forced error is an error that was provoked by an opponent through good play... I don't know how to resume it any simpler but there's only one way to force errors from an opponent is through controlled aggression, point construction, moving her around the court, putting her into uncomfortable situations etc... that will have for result a forced error.

Let's take Petra, she doesn't forcefully need to move the ball around that much to generate forced errors... the simple fact that she puts so much pace into her shots, the placement are enough to have her opponent miss. She could still be hitting people off the court even if she would hit like 9 winners in a match depending on her opponent's abilities to control her shots or not.

From the numbers, we can observe that Petra's average winners are relatively close to the average errors she forces from her opponent, 28.93 to 26.19 - she relies on both capacities to hit you off the court and pressure you off the ground through aggressive play. Relating these 2 numbers, we can see that Petra wins an average of 54.81 points through just pure aggressive play (winners + forced errors) which is a great compromise.

II. Forced errors and the surface, the secret

People will be shocked if I said Petra forces more errors in her opponents than she actually hits winners on grass... Kidding but actually it's close. Petra hits an average of 30.07 winners on grass and forces 30.47 errors from her opponents on the same surface. Observe now how this reduces from 30.07 to 27.2 and 30.47 to 26.2 on clay.

The explanation is pretty simple though it's the intrinsic characteristics of the surfaces in question. The reason for the high number of forced errors at Wimbledon is due to the simple fact that grass courts are quite fast. The ball bounces fast and low which makes it complicated for the player reaching it and returning it. The fact that Petra hits her shots so flat does also participate in the fact of all these forced errors. Rallies are generally short.

From my point of view, just my 2cts. interpretation, Petra could be hitting half less winners and with her tennis still blow off a vast majority of the girls off grass because her peak game on grass is very hard to handle as seen on the forced errors statistics.

III. From forced errors to the aggressive margin

So once we have a forced errors stats, we would like to know what is the margin of points Petra won through aggression... in fact we want to know how great is her shotmaking, IDK, it's just simple as that and what the aggressive margin represents. The aggressive margin can either be positive or negative which in the second case would mean that she wasn't abled to get things right on the court.

Petra's aggressive margin on grass averages 58.35 points which is 4 points over her overall average of 54.81 points with a peak at 71 in Wimbledon's 2010 QF. On clay, this falls at 45.8 simply because of the surface which doesn't allow her to be that much aggressive from the back court.

How does this interpret, +54.81 is just exceptional and a further confirmation for us to see how excellent her shotmaking is off the ground in both hitting clear winners and putting pressure on the opponent off the ground by forcing errors from them.

IV - Winning play, an unknown

Fans generally just watch her and are astonished at the tons of winners she hits during a given match... but let's be serious. Is she THAT good at first, taking a point into hand and second ending it with an aggressive play !? That's where this notion is enlightening.

An eventual warning, the winning play does not factually exist to say so as a stat but just something I wanted to introduce to have in depth analyses of Petra and her game.

She average 18.69% in the winning play department, remember ? It means 18.69% of the times, Petra is abled to take control over a point and end it with an aggressive play (sounds like the aggressive margin or the forced error, no !?). On grass, this numbers goes up to 21.75% and up to 23.51% in Wimbledon 2011 so it shows that she still has a huge margin of progression in terms of ending points. Why !?

V. The winning play in comparison to the Unforced errors

The winning play on it's own doesn't have that much importance (from my point of view)... it takes depth in comparison with the unforced errors. Indeed, for every 18.69% of times Petra ends a point with an aggresive shot she hits 18.69% of UEs...

Let me show you why Petra's progression can greater, let's focus only on Wimbledon 2011. Compared to 2009, she reduced her UE count from 17.83 to 13.14 average, enormous considering that she hit much more winners in 2011, 33.28, almost 3 every 10 games. If we compare Petra before the SF stage in 2011 compared to 2009, she was 35.6 winners for 13.1 UE... no need to be a genius to see the outcome.

Let's go back to the overall stats, remember ? 18.69% of winning plays for 18.50% of unforced errors get the thing ? For every 6 aggressive shots (forced or clean winner), Petra hits almost as much UEs or close, 4 per 10 game, this is where she can progress and she did progress in Wimbledon 2011.

IV. Conclusions

I know this is a lot to say quite a little but it was necessary for me, myself and I to make the factual demonstration to my spirit to observe what others said or hesitantly without any kind of solid base.

Stats are probably the most complicated thing to interpret. Petra's game is both very risky but also very productive of the ground from the amount of pressure she's abled to generate either with her quality of shots, height : flat, lift etc..., pace and placement. These numbers shows that she's clearly not only a shotmaker.

It is up to her opponent's, if they can't control her basic shots (rally balls or any ways the shots where she plays a little more patient yet still pressuring, looking...) then they're simply getting overpowered during the course of a match because of the pressure her game puts and there failures to take hold of that pressure.

She's always going to hit more winners than unforced errors that's normal but I think it's important to not get fooled because she also forces a lot of things from her opponents who become very uncomfortable, either having them go for too much (so more UEs for them), perhaps simply just have them miss because they're clearly lacking of time or basically can't control the very simple shots.

It's very important to note that Petra's opponents in majors do not hit lots of UEs. An average of 16.37 but she simply just doesn't allow them to anyways since she has total control over everything. She hits more UEs and more winners than her opponents and the only two times since 2009 a player hit more UEs than Petra hit winners was in Wimbledon 2010 vs. Cirstea 1st. round and AO 2011 1st. round vs. Sally Peers. In fact, her opponents UEs in majors only counts 36.14% of times in the outcome of her matches which means 63.86% of the rest of times she is the decider (clear winners, forced errors or just UEs herself).

The last fact to take into consideration is the UEs and that's where perhaps her game is always on the border line... just the right balance between aggression (forced or clear winners) and UEs and in Wimbledon 2011 it was clear -4.69 UEs in average is a huge cutdown while the winners took +5.95 in average.

It's unfortunate I can't do that for the WTA tour but hopefully my very small contribution will bring better light into the majors and her game.

Quote:
Any complementary informations on these I stated above can be found in the ITF Technical, coaching section search for Seeking to Measure the Quality of Tennis Performance. - PDF
Attached Images
File Type: png Petra game profile.PNG (77.6 KB, 6 views)

Génie - Victoria - Kristina.

Last edited by Vikapower; Sep 13th, 2011 at 05:58 PM.
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Re: Complete stats for Petra Kvitova

Unbelievable
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post #11 of 79 (permalink) Old Aug 6th, 2011, 08:20 PM
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Re: Complete stats for Petra Kvitova

Kudos, astonishing work. One thing about the math I noticed though...

Quote:
Winners/UEs: Petra hits an average of 28.93 winners and 25.15 UEs in majors, it's quite a positive stat and calculating the ratio, for 1 winner, Petra will hit 1.150 UEs (781/679 = 1:1.150) if she plays a match in a GS event. To make a simple focus on grass, Petra is 431 for 237, 1:1.776 obviously a surface on which gives her the advantage to hit much much more winners than in the other events.
Shouldn't it be "for 1 winner, Petra will hit 0.87 UEs (781/679 = 1.150:1 = 1:0.87)" ?

She has more winners than unforced errors. The same goes for the rest - the sides of the proportions are switched.
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post #12 of 79 (permalink) Old Aug 6th, 2011, 08:46 PM Thread Starter
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Re: Complete stats for Petra Kvitova

Petra's serving profile...


NEXT UPDATE After Beijing 2011

- 1st. serve % evolution : here.
- 1st. serve % evolution vs. 1st. serve % won : here.
- Aces/double faults evolution : here

- All serving Data for 2011 including serve speed (all 4 majors).
Attached Images
File Type: png Serve speed profile.PNG (97.0 KB, 2 views)
File Type: png Serve speed profile_2.PNG (37.4 KB, 3 views)
File Type: png Serving profile.PNG (78.2 KB, 4 views)
File Type: png Serving profile_2.PNG (77.4 KB, 4 views)

Génie - Victoria - Kristina.

Last edited by Vikapower; Sep 30th, 2011 at 11:12 AM.
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post #13 of 79 (permalink) Old Aug 7th, 2011, 01:50 PM
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Re: Complete stats for Petra Kvitova

I love your work. I´m interested in this file. Petra´s playing profile. Are you willing do a version 1.1 for dummies ?

Would you be so kind and copy the first title line to the end of the file ? When you saved it as a picture, it is easier to orientate in it.

Would you consider to post 2 columms with data you are using to count the forced errors ? Total points won and opponents unforced errors.

Third point (more difficult) I think it is more user friendly to know who her opponent was. You can use different colors for different years or different colours for different Grand slams and there will be 1 columm left that can be used.

Thank you very much.
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post #14 of 79 (permalink) Old Aug 7th, 2011, 02:33 PM Thread Starter
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Re: Complete stats for Petra Kvitova

- All the opponents (rankings) Petra faced since she has participated on a WTA main draw in 2008 and how she faired against them - also winning and losing streak observer. (WTA main draws only and Fed Cup) -- Until US Open 2011

- The order in which she played each tournaments is respected.

**Updated**



- Google docs, active sheet : Here.

Génie - Victoria - Kristina.

Last edited by Vikapower; Oct 6th, 2011 at 02:07 PM.
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post #15 of 79 (permalink) Old Aug 7th, 2011, 05:59 PM
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Re: Complete stats for Petra Kvitova

Whauuuu. I don´t know what to say . You made it in 3 hours . This is impossible. Thanks a million times

I´m estupido. But You don´t have to explain it more. I really don´t care whether right version is 781/ 689 or 689/781. I was just looking at Azarenko semifinal stats and was wondering 40 winners 38 forced errors so how many unforced errorrs and I got 2 unknows and it makes little trouble.

About moving the line. The problem is this . I got more computers. I save your great table as png picture. Copy it from one computer to another. But there are different monitors. So you have to zoom. I meaned line Year- Event- opponent to the last line. But it is fine. No problem.

Again Great work

Everytime I look at you table, I like it more. You even have minium and maximum. Minumim -10 with Serena , Maximum 71, Kanepi 125 total points won It means 3 sets . I dont have to know the exact result 46 76 86


Another intersting note you need to win at least 48 points in a match. 43 lost to zvoanreva . 54 wozniakci . 55 Wickamyer

Last edited by paulmara; Aug 7th, 2011 at 07:22 PM.
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