[Julian.]

I did the men's one as well .

These are the women who won Junior Grand Slam or ITF Junior World Champion since 1997.

Reached #1 or won Grand Slams:

Justine Henin (Belgium)
Junior GS Titles: French Open 1997
Highest Ranking: #1
Best Senior GS Result: Winner

Svetlana Kuznetsova (Russia)
Junior GS Titles: -
2001 ITF Junior World Champion
Highest Ranking: #2
Best Senior GS Result: Winner

Jelena Jankovic (Serbia)
Junior GS Titles: Australian Open 2001
Highest Ranking: #1
Best Senior GS Result: F

Victoria Azarenka (Belarus)
Junior GS Titles: Australian Open 2005 and US Open 2005
2005 ITF Junior World Champion
Highest Ranking: #1
Best Senior GS Result: Winner

Caroline Wozniacki (Denmark)
Junior GS Titles: Wimbledon 2006
Highest Ranking: #1
Best Senior GS Result: F

Reached Top 5 but not world #1 nor won a grand slam:

Nadia Petrova (Russia)
Junior GS Titles: French Open 1998
Highest Ranking: #3
Best Senior GS Result: SF

Jelena Dokić (Serbia/Australia)
Junior GS Titles: US Open 1998
1998 ITF Junior World Champion
Highest Ranking: #4
Best Senior GS Result: SF

Agnieszka Radwanska (Poland)
Junior GS Titles: Wimbledon 2005 and French Open 2006
Highest Ranking: #2
Best Senior GS Result: F

Reached Top 10 but not Top 5:

Marion Bartoli (France)
Junior GS Titles: US Open 2001
Highest Ranking: #7
Best Senior GS Result: F

Reached Top 20 but not Top 10:

Katarina Srebotnik (Slovenia)
Junior GS Titles: Wimbledon 1998
Highest Ranking: #20
Best Senior GS Result: 4R

Virginie Razzano (France)
Junior GS Titles: Australian Open 1999 & French Open 2000
Highest Ranking: #16
Best Senior GS Result: 4R

Iroda Tulyaganova (Uzbekistan)
Junior GS Titles: Wimbledon 1999
Highest Ranking: #16
Best Senior GS Result: 3R

Kaia Kanepi (Estonia)
Junior GS Titles: French Open 2001
Highest Ranking: #16
Best Senior GS Result: QF

Maria Kirilenko (Russia)
Junior GS Titles: US Open 2002
Highest Ranking: #12
Best Senior GS Result: QF

Anna-Lena Grönefeld (Germany)
Junior GS Titles: French Open 2003
Highest Ranking: #14
Best Senior GS Result: QF

Shahar Peer (Israel)
Junior GS Titles: Australian Open 2004
Highest Ranking: #11
Best Senior GS Result: QF

Agnes Szavay (Hungary)
Junior GS Titles: French Open 2005
Highest Ranking: #13
Best Senior GS Result: QF

Anastasia Pavlyuchenkova (Russia)
Junior GS Titles: Australian Open 2006, US Open 2006, Australian Open 2007
2006 ITF Junior World Champion
Highest Ranking: #13
Best Senior GS Result: QF

Alize Cornet (France)
Junior GS Titles: French Open 2007
Highest Ranking: #11
Best Senior GS Result: 4R

Reached Top 50 but not Top 20:

Mirjana Lučić (Croatia)
Junior GS Titles: US Open 1996 & Australian Open 1997
Highest Ranking: #32
Best Senior GS Result: SF

Cara Black (Zimbabwe)
Junior GS Titles: Wimbledon 1997 & US Open 1997
1997 ITF Junior World Champion
Highest Ranking: #31
Best Senior GS Result: 4R

Jelena Kostanić Tošić (Croatia)
Junior GS Titles: Australian Open 1998
Highest Ranking: #32
Best Senior GS Result: 3R

Lourdes Domínguez Lino (Spain)
Junior GS Titles: French Open 1999
Highest Ranking: #40
Best Senior GS Result: 3R

Lina Krasnoroutskaya (Russia)
Junior GS Titles: US Open 1999
1999 ITF Junior World Champion
Highest Ranking: #25
Best Senior GS Result: QF

Aniko Kapros (Hungary)
Junior GS Titles: Australian Open 2000
Highest Ranking: #44
Best Senior GS Result: 4R

Barbora Záhlavová-Strýcová (Czech Republic)
Junior GS Titles: Australian Open 2002 and Australian Open 2003
2002 ITF Junior World Champion
Highest Ranking: #39
Best Senior GS Result: 3R

Vera Dushevina (Russia)
Junior GS Titles: Wimbledon 2002
Highest Ranking: #31
Best Senior GS Result: 4R

Kirsten Flipkens (Belgium)
Junior GS Titles: Wimbledon 2003 and US Open 2003
2003 ITF Junior World Champion
Highest Ranking: #32
Best Senior GS Result: 4R

Sesil Karatantcheva (Bulgaria/Kazakhstan)
Junior GS Titles: French Open 2004
Highest Ranking: #35
Best Senior GS Result: QF

Kateryna Bondarenko (Ukraine)
Junior GS Titles: Wimbledon 2004
Highest Ranking: #29
Best Senior GS Result: QF

Michaëlla Krajicek (Netherlands)
Junior GS Titles: US Open 2004
2004 ITF Junior World Champion
Highest Ranking: #30
Best Senior GS Result: QF

Urszula Radwańska (Poland)
Junior GS Titles: Wimbledon 2007
2007 ITF Junior World Champion
Highest Ranking: #29
Best Senior GS Result: 2R

Simona Halep (Romania)
Junior GS Titles: French Open 2008
Highest Ranking: #37
Best Senior GS Result: 3R

Laura Robson (Great Britain)
Junior GS Titles: Wimbledon 2008
Highest Ranking: #43
Best Senior GS Result: 4R

Ksenia Pervak (Russia/Kazakhstan)
Junior GS Titles: Australian Open 2009
Highest Ranking: #37
Best Senior GS Result: 4R

Heather Watson (Great Britain)
Junior GS Titles: US Open 2009
Highest Ranking: #40
Best Senior GS Result: 3R

Reached Top 100 but not Top 50:

María Emilia Salerni (Argentina)
Junior GS Titles: Wimbledon 2000 and US Open 2000
2000 ITF Junior World Champion
Highest Ranking: #65
Best Senior GS Result: 2R

Angelique Widjaja (Indonesia)
Junior GS Titles: Wimbledon 2001 and French Open 2002
Highest Ranking: #55
Best Senior GS Result: 2R

Arantxa Rus (Netherlands)
Junior GS Titles: Australian Open 2008
Highest Ranking: #61
Best Senior GS Result: 4R

Coco Vandeweghe (USA)
Junior GS Titles: US Open 2008
Highest Ranking: #69
Best Senior GS Result: 2R

Kristina Mladenovic (France)
Junior GS Titles: French Open 2009
2009 ITF Junior World Champion
Highest Ranking: #76
Best Senior GS Result: 3R

Kristyna Plíšková (Czech Republic)
Junior GS Titles: Wimbledon 2010
Highest Ranking: #86
Best Senior GS Result: 2R

Annika Beck (Germany)
Junior GS Titles: French Open 2012
Highest Ranking: #68
Best Senior GS Result: 2R

Haven't reached Top 100:

Kristína Kučová (Slovakia)
Junior GS Titles: US Open 2007
Highest Ranking: #103
Best Senior GS Result: 2R

Noppawan Lertcheewakarn (Thailand)
Junior GS Titles: Wimbledon 2009
2008 ITF Junior World Champion
Highest Ranking: #149
Best Senior GS Result: 1R

Karolína Plíšková (Czech Republic)
Junior GS Titles: Australian Open 2010
Highest Ranking: #107
Best Senior GS Result: 1R

Elina Svitolina (Ukraine)
Junior GS Titles: French Open 2010
Highest Ranking: #112
Best Senior GS Result: 1R

Daria Gavrilova (Russia)
Junior GS Titles: US Open 2010
2010 ITF Junior World Champion
Highest Ranking: #162
Best Senior GS Result: 2R

Ashleigh Barty (Australia)
Junior GS Titles: Wimbledon 2011
Highest Ranking: #175
Best Senior GS Result: 1R

Grace Min (USA)
Junior GS Titles: US Open 2011
Highest Ranking: #169
Best Senior GS Result: N/A

Irina Khromacheva (Russia)
Junior GS Titles: -
2011 ITF Junior World Champion
Highest Ranking: #165
Best Senior GS Result: N/A

Eugenie Bouchard (Canada)
Junior GS Titles: Wimbledon 2012
Highest Ranking: #137
Best Senior GS Result: N/A

Haven't reached Top 200:

An-Sophie Mestach (Belgium)
Junior GS Titles: Australian Open 2011
Highest Ranking: #360
Best Senior GS Result: N/A

Ons Jabeur (Tunisia)
Junior GS Titles: French Open 2011
Highest Ranking: #260
Best Senior GS Result: N/A

Taylor Townsend (USA)
Junior GS Titles: Australian Open 2012
2012 ITF Junior World Champion
Highest Ranking: #420
Best Senior GS Result: N/A

Samantha Crawford (USA)
Junior GS Titles: US Open 2012
Highest Ranking: #271
Best Senior GS Result: 1R

Ana Konjuh (Croatia)
Junior GS Titles: Australian Open 2013
Highest Ranking: #869
Best Senior GS Result: N/A

[Juju Nostalgique]

IMO the worst case is Angie.

I think that she had too many injuries...

[Monica_Rules]

Interesting, hopefully Laura ends up being a top 10 success

[Hayato]

I guess another "disappointing" one on paper would be Rossana de los Rios.
#1 Junior in 1991, Roland Garros Champion, Wimbledon Finalist- and only highest ranking of #51 in 2001.

Obviously, had she not got married and had a baby in between she would have come much further in tennis.
But as she says, she doesn't regret a thing. What can be more important than family?

[Mastodon]

Dokic won the US Open Girls and was RU at the French.

[Julian.]

Originally Posted by Juju Nostalgique

IMO the worst case is Angie.

I think that she had too many injuries...

I agree. Injuries practically destroyed her senior career.
She isn't even competing right now.

[timafi]

Amelie is missing on that list.She won Wimbledon and RG

[Julian.]

I only listed those winners since 2000. I know Mauresmo and Dokic won juniors. Amelie would be in the same class as Sveta and Jelena. Dokic with Vika, Caro, Aga.

[Tala Igasho]

Aga, Ágnes, Alizé, Vika are all still very young. So they have not underachieved, they still have many more years.

[SVK]

Widjaja isn´t disappointing, she had a bad luck

Flipkens is biggest disappointing for me, but this girl had health problems too i think

[Tala Igasho]

Also I don't like how you say 'Can't even reach top 50' You say it like it's an easy thing to do To even be a top 100 player is a phenomenal achievment.

[iPatty]

Originally Posted by Ciarán

Also I don't like how you say 'Can't even reach top 50' You say it like it's an easy thing to do To even be a top 100 player is a phenomenal achievment.

Top100? To even obtain a WTA ranking these days takes a pretty outstanding tennis player.

[Tala Igasho]

Originally Posted by iPatty

Top100? To even obtain a WTA ranking these days takes a pretty outstanding tennis player.

That is why I used the word phenomenal.

[Julian.]

Originally Posted by Ciarán

Also I don't like how you say 'Can't even reach top 50' You say it like it's an easy thing to do To even be a top 100 player is a phenomenal achievment.

Ok, i'll change it to "didn't reach top 50".

[Julian.]

Btww, why isn't Widjaja playing right now? Is she still injured? It has been years since she left the tour...