Determining the best WTA player of the 21st century remains an evolving debate. With a quarter-century elapsed since 2000, a thorough examination considers Grand Slam success, total titles, ranking tenure, era competitiveness, and overall impact.
Jennifer Capriati’s comeback marked her as a notable figure early in the millennium, capturing her first major at the 2001 Australian Open, then Roland Garros the same year, followed by the 2002 Australian Open title, along with 17 weeks as No. 1.
Victoria Azarenka dominated in the early 2010s, securing back-to-back Australian Open victories in 2012 and 2013, three US Open finals, semifinal appearances at Roland Garros and Wimbledon, and spending 51 weeks at No. 1 with 21 titles including 10 at WTA 1000 level.
Naomi Osaka achieved an unprecedented streak of winning a Grand Slam in four consecutive seasons: US Open titles in 2018 and 2020, Australian Open wins in 2019 and 2021, alongside 25 weeks atop the rankings.
Arina Sabalenka has become a consistent force with back-to-back Australian Open titles in 2023 and 2024 and the 2024 US Open, three Wimbledon semifinals, approaching 50 weeks as No. 1 with 20 titles including nine WTA 1000 victories.
Kim Clijsters overcame early final losses to amass four majors, including three US Open wins after returning from retirement, 20 weeks as No. 1, 40 post-2000 titles, seven WTA 1000 titles, and three WTA Finals victories.
Iga Swiatek sets the standard as a six-time Grand Slam winner with a perfect 6–0 finals record, a Surface Slam, 125 weeks at No. 1, 10 WTA 1000 titles, and an unparalleled 37-match win streak in 2022.
Maria Sharapova remains the last to complete the Career Grand Slam, with five majors and 36 titles including 14 at WTA 1000 level, despite her career’s later setback from doping allegations.
Justine Henin, with 117 weeks at No. 1 and seven Grand Slam titles including multiple French Open wins, stands as one of the game’s all-time greats.
Venus Williams’ five Wimbledon titles, two US Open championships, nine major finals runner-up finishes, 11 weeks as No. 1, and 40 post-2000 titles underline her significance in a highly competitive era.
Serena Williams, however, towers above all, with 22 of her 23 Grand Slam titles amassed after 2000, multiple titles across all majors, two stints holding all four Grand Slam titles simultaneously, a record 319 weeks at No. 1, and 68 WTA titles since 2000, epitomizing dominance in this century.