Serena Williams is widely considered the greatest tennis player of all time and one stat paints a very clear picture of why.
If you need reasons why Serena Williams is considered the GOAT, then you clearly haven't been paying attention to the past 20 years. Besides accumulating 23 grand slam singles titles and 13 grand slam doubles titles, Williams also had 73 titles overall.
He holds a career 84.6% win rate in singles which is incredible but one particular stat paints an even clearer picture of her iconic status. She has beaten every grand slam champion from 1991 to 2019 at least once. Basically, if you take all the players that won at least one grand slam from 1991 to 2019, Williams has a win against them.
So essentially over the span of her career, Williams defeated the best players in that era at least once but not only did she do it once, but she beat most of them a couple of times. She has a 3-4 record against Sanchez Vicario, 1-3 against Osaka, 1-1 against Graff and 3-3 against Muguruza for example.
If you wondering what are some other H2H record over grand slam champions, well here they are: Martinez (5-0), Myskina (5-0), Lindsay Davenport (10-4), Svetlana Kuznetsova (10-3), Kim Clijsters (7-2), Amelie Mauresmo (7-2), Venus Williams (19-12), Maria Sharapova (20-2), Ana Ivanovic (9-1), Francesca Schiavone (7-2), Samantha Stosur (8-3), Victoria Azarenka (18-5), Flavia Pennetta (8-0), Caroline Wozniacki (10-1) and Simona Halep (10-2).