Photo Gallery: La Monf's Air-Tweener, Serena's Mini-Me and more from MSG

After a night of trying, Wozniacki pulled off a tweener.

But it wasn't enough to beat Serena, who, as you can see from this picture, always plays to win.

Tennis returned to New York's fabled Madison Square Garden on Tuesday night, with Serena Williams, Caroline Wozniacki, Gael Monfils and Stan Wawrinka providing the entertainment in the BNP Paribas Showdown. Anita Aguilar captured the evening's most memorable moments—as you'll see, there were plenty to choose from at this exo—and Steve Tignor provides the commentary.

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Best tennis friends: Serena and Caroline at the pre-match press conference.

It took a while, but someone finally asked Stan Wawrinka a question.

The boys, apparently, had serious business to discuss.

Serena closed her eyes and went for it with her dream team singers.

Chris Evert was among many tennis legends in attendance...

...including tennis's original Stan the Man.

The Knicks really could use a guard, you know...

Poetry preparing for motion: Wawrinka lines up his famous one-hander.

You've heard of the tweener, but what about the Air Tweener? La Monf showed us how it's done.

Wozniacki made a surprise appearance on Monfils' side of the court...

...while Serena danced her way onto Stan's.

Monfils entertained the crowd...

...and beat Wawrinka, in his first appearance at Madison Square Garden. Hopefully it's not his last.

Stan did get a consoling high-five from his Mini-Me...

...while Serena sized hers up.

Is there a Baby Monfils in tennis' future?

After a night of trying, Wozniacki pulled off a tweener.

But it wasn't enough to beat Serena, who, as you can see from this picture, always plays to win.