47 — Marion Bartoli, 2013 Wimbledon
45 — Jana Novotna, 1998 Wimbledon
39 — Francesca Schiavone, 2010 French Open
34 — Sam Stosur, 2011 U.S. Open
32 — Amelie Mauresmo, 2006 Australian Open
29 — Jennifer Capriati, 2001 Australian Open
29 — Kerry Melville Reid, 1977 Australian Open (Jan.)
26 — Lindsay Davenport, 1998 U.S. Open
25 — Victoria Azarenka, 2012 Australian Open
22 — Kim Clijsters, 2005 U.S. Open