The 20-time major champion beat older sister Venus 6-4, 6-3 Monday at Wimbledon to advance to the quarterfinals.
Both Serena and Venus are five-time champions at the All England Club, but Serena is on track for a true Grand Slam after winning the Australian Open and French Open this year.
With Madison Keys and CoCo Vandeweghe also winning Monday, it’s the first time three American women have reached the Wimbledon quarterfinals since Serena, Lindsay Davenport and Jennifer Capriati did it in 2004.
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