Serena Williams won her match against her sister Venus Williams in three sets Tuesday at the U.S. Open to advance to the semifinals. (Al Bello/Getty Images)

With a powerful ace, Serena Williams capped her biggest win of the tournament.

She’ll have to win two more matches in order to complete the calendar Grand Slam and tie Steffi Graf with 22 Grand Slam titles, but the atmosphere inside Arthur Ashe Stadium Tuesday night felt like a U.S. Open final.

Playing in front of a sell-out crowd, Serena outlasted older sister Venus in just under two hours, 6-2, 1-6, 6-2.

The quarterfinal match drew all of the attention deserved of what was, for at least a decade, sports’ greatest rivalry. But the first set Tuesday looked much like most of their recent meetings, a reminder that Venus can no longer challenge Serena in the same way.

Crowd loyalty was mixed throughout the match. The loudest cheers erupted when Oprah Winfrey and comedian Aziz Ansari appeared on the big screen. When Donald Trump’s face flashed across, the entire stadium finally seemed to be in unison, booing even louder than they’d cheered at any point in the match.

Serena earned her first break-point opportunity in the first game of the match, but failed to convert. She’d finally do so in the fifth game to take the 3-2 advantage, and again in the seventh, to lead 5-2. A quick hold, and she’d taken the first set.

Neither looked particularly quick, each playing more defense than anything else. It was as though all of the attention paid this match had worn them out before they even took the court.

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SOURCE: Yahoo Sports Busted Racquet – Danielle Elliot