win-loss percentage was 81.01% (704-165). Her win-loss performance in all Grand Slam singles tournaments was 82.09% (133-29), at the French Open , 84.21% (16-3), at Wimbledon , 83.33%% (50-10), at the US Open , 81.25% (26–6), and at the Australian Open , 80.39% (41-10). We have done much research and have