Williams overcame a lingering illness to defeat Lucie Safarova 6-3, 6-7 (2), 6-2 in the 2015 French Open final for a third trophy in Paris.
GRAND SLAM 21Williams stretched her Grand Slam winning streak to 28 matches and completed a second "Serena Slam" of four majors in a row by beating Garbiñe Muguruza 6-4, 6-4 in the 2015 Wimbledon final.
NO CALENDAR-YEAR GRAND SLAMWilliams' bid for the first true Grand Slam in tennis since 1988 — winning all four singles championships during one calendar year — came up just short: She lost in the 2015 U.S. Open semifinals to 43rd-ranked Roberta Vinci 2-6, 6-4, 6-4.
GRAND SLAM 22Williams equaled Graf's record for most Grand Slam titles in the professional era (also known as the Open era, it began in 1968) by collecting No. 22 at Wimbledon in 2016 with a 7-5, 6-3 victory over Angelique Kerber in the final. It was a seventh Wimbledon trophy for Williams.
GRAND SLAM 23Williams surpassed Graf by getting record No. 23 at the 2017 Australian Open with a win, fittingly, against Venus in the final, 6-4, 6-4. Only Margaret Court has won more Grand Slam singles titles in tennis history, 24, but only 11 of hers came during the professional era. No one knew it at the time, but Williams was pregnant at Melbourne Park; her daughter, Olympia, would be born on Sept. 1. Williams dealt with health complications after the birth.
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