Career 2013 2012 2011 2007 2006 Too close to call — 6–6 on categories Birnerova wins on break points saved %. Knapp’s case rests on aces. WTA Tour 2012: Birnerova 14 matches, Knapp 14 matches.
Knapp averages 1.6 aces a match to Birnerova’s 1.1 (38% more). Birnerova has the better break points saved %: 58.7 to Knapp’s 52.2. Birnerova has the better break points converted %: 52.2 to Knapp’s 42.7. Winners’ edge: Knapp’s team won 50%, Birnerova’s team won 36% of the matches they played. Tale of the tape Per game, with league rank among regular players.
60.7 First serve in % 59.0
60.3 First-serve points won % 60.4
58.7 Break points saved % 52.2
45.7 Return points won % 44.8
1.1 16 total · best 4 Acesper game 1.6 22 total · best 6
9.4 132 total · best 16 Games wonper game 10.4 145 total · best 15
Head to head 1 2 matches since 2012 1
Clay · 1 match Birnerova 0 Knapp 1 Hard · 1 match Birnerova 1 Knapp 0 Last meetings 18 Feb 2013 · Bogota · Round of 32 · Clay Knapp won 6-1 6-1 10 Sept 2012 · Tashkent · Round of 16 · Hard Birnerova won 6-2 6-2 Last 10 games First serve in %, oldest to newest in 2012.
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