Serena Williams defeated Yaroslava Shvedova 6-2 6-3 to advance to the quarter-finals of the US Open, and in the process, make tennis history.
The world number one claimed her 308th Grand Slam victory, surpassing Martina Navratilova (306), and Roger Federer (307), as the leader in the all-time most Grand Slams win list.
Williams already has 22 Grand Slam titles to her name, the same as Steffi Graf, but she is still needing three more to overtake Margaret Court.
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The longevity of Williams' career is simply stunning, having turned pro 21 years ago back in 1995, winning her first Grand Slam at Flushing Meadows back in 1999.
Her place in history is already secure, having won six US Open titles, seven Wimbledon titles, three French Open titles, and six Australian Open titles.
Her dominance of the women's game has been unprecedented throughout her lengthy career, but in recent year, she has been on a different level, winning five of the last eight Grand Slams.
Add to these accolades the thirteen doubles Grand Slams she's won alongside sister Venus Williams, and Serena is one of the most decorated tennis players of all time, one of the greatest female athletes ever, and one of America's leading sports stars.
You can watch the moment Serena broke the record in the video below.
Williams is not going to be overwhelmed by her latest achievement, however: "I just feel like I'm going out there doing what I need to do," Serena told reporters. "I'm not overplaying, I'm not underplaying. I'm just trying to play my way into this tournament."
Williams will not face an easy opponent in her quest to reach the semi-finals and win Grand Slam number 23, however, as she faces off against fifth seed Simona Halep, a former French Open runner up in 2014.