Williams has been ranked world No. 1 by the Women's Tennis Association on three occasions, for a total of 11 weeks. She first reached the No. 1 ranking on February 25, 2002, the first African American woman to do so in the Open Era, and the second all time since Althea Gibson. Williams' seven Grand Slam singles titles are tied for 12th on the all-time list, and 8th on the Open Era list, more than any other active female player except her sister. She has reached 16 Grand Slam finals, most recently at Wimbledon in 2017. She has also won 14 Grand Slam Women's doubles titles, all with Serena Williams; the pair is unbeaten in Grand Slam doubles finals. Williams also has two Mixed Doubles titles. Her five Wimbledon singles titles tie her with two other women for eighth place on the all-time list, but give her sole possession of No. 4 on the Open Era List, trailing only the nine titles of Martina Navratilova and the seven of Serena Williams and Steffi Graf. From the 2000 Wimbledon Championships to the 2001 US Open, Williams won four of the six Grand Slam singles tournaments in that span. At the 2020 Australian Open, Williams extended her record as the all-time leader, male or female, in Grand Slams played, with 85. With her run to the 2017 Wimbledon singles final, she broke the record for longest time between first and most recent grand slam singles finals appearances. Williams was twice the season prize money leader in 2001 and 2017.