Originally Posted by terjw
Interesting. Well I suppose the positive is that the real dip was 2012 Tokyo and she's on an upwards curve compared to that. It sounds from what I've read in the Live Scoring Thread that she made a ton of those UEs here in Doha at the end of the 2nd set when she allowed Aga to come back and that was the most disappointing part of her last match.
Have you any figures for her earlier matches with Aga when she was just winning tournament after tournament. I think she was already well in decline by 2011 YEC. I bet her UEs in her earlier encounters were way down from all four of the matches you quote.
Here's what I could find. Stuttgart is indoor red clay, Tokyo was a retirement by Aga down 5-0 1st set, and Indian Wells is a very slow hard court (one of the slowest on tour)
2011 Stuttgart: 34 winners and 25 unforced errors
2010 Tokyo: Caro 9 winners and 5 unforced errors
2010 Indian wells: 21 winners and 25 unforced errors