Serena Williams
Steffi Graf
Stat by stat
Bars are scaled to the leader in this list.
The verdict
Steffi Graf leads 2 of 3 categories. Our all-time ranking places Serena Williams at #2 and Steffi Graf at #5.
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The case for Serena Williams
Serena Williams won her first major at the 1999 US Open at age 17 and her 23rd — the Open Era record for any player, man or woman — at the 2017 Australian Open while roughly eight weeks pregnant. Between those bookends lies the most sustained excellence in women's sports history: 23 Slam finals won from 33 contested, 319 weeks at No.1 including a 186-week consecutive run that tied Steffi Graf's record, four Olympic gold medals, and two separate 'Serena Slams' (holding all four majors at once) completed eleven years apart, in 2002-03 and 2014-15. She won majors as a teenager and in her mid-thirties, beat No.1-ranked opponents across three different decades, and returned from a 2011 pulmonary embolism to compile arguably her best stretch, going 3.5 seasons from 2012 with a match record above 90 percent. Her serve is widely considered the greatest shot in the history of women's tennis. On dominance relative to field, she has a case for the top spot on any list.
The case for Steffi Graf
Graf did the one thing no other player in tennis history has done: the 1988 Golden Slam, winning all four majors plus Olympic singles gold in Seoul in a single season, at age 19. Her 22 Grand Slam titles came with a distribution no one else can claim — she is the only player, man or woman, to win each of the four majors at least four times, proof of true all-surface supremacy in an era when the surfaces played far more differently than today. Her 377 total weeks at No.1 remain the all-time record for either tour, and she finished year-end No.1 eight times. The forehand — 'Fraulein Forehand' — and a knifing slice backhand made her the bridge between the classic and power eras. The honest asterisk: Monica Seles had won 8 of 9 majors entered and led their rivalry when she was stabbed by a Graf fan in April 1993, and Graf won 10 of her 22 majors afterward. Even discounting for that, the Golden Slam and the surface spread put her peak among the three or four highest ever reached.