Federer Upset at U.S. Open

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Grigor Dimitrov beat Roger Federer for the first time in his career, and earned a spot in the U-S Open semifinals in the process.

The 78th-ranked Dimitrov stunned Federer 3-6, 6-4, 3-6, 6-4, 6-2 to win their quarterfinal matchup at Arthur Ashe.

Dimitrov will face Daniil Medvedev in the semis.  Medvedev defeated Stan Wawrinka earlier in the day.

Serena Williams had the quickest match of the 2019 U-S Open.

The American superstar needed just 44 minutes to defeat China's Wang Qiang 6-1, 6-0 in the quarterfinals at Flushing Meadows.

The win was the 100th of her career at the U-S Open and launched her into her 13th semifinal at the Grand Slam tournament.