WASHINGTON — With Gilbert Arenas back on the floor, the Washington Wizards fell apart in too many ways to count in the fourth quarter. Forget all his dramatics: Agent Zero had the show stolen by a rookie making his first NBA game-winner.

Ramon Sessions hit a 19-foot jumper at the buzzer Wednesday night to give the Milwaukee Bucks a 110-109 victory over the Wizards, who left the game with severely bruised egos and new injuries to Antawn Jamison and DeShawn Stevenson.

The Bucks, who never led by more than one point, overcame a 10-point fourth-quarter deficit and ran a perfect inbounds play to win the game.

With 1.1 seconds left, Royal Ivey threw the ball into the post to Andrew Bogut, who was supposed to turn and shoot but instead flicked the ball quickly to an open Sessions in the corner.

There was barely a tick left on the clock as the ball left the rookie's hands, but the shot was clearly good upon instant replay review.

"That's the biggest 1.1 seconds of my life right there," said Sessions, a second-round pick whose eight points and eight rebounds were both career highs. "That's my biggest shot, by far."

Charlie Villanueva had 24 points and 12 rebounds for the Bucks, whose celebration took some of the sting from the news that they were mathematically eliminated from the playoffs by Atlanta's win over Toronto.

Milwaukee also ended an eight-game road losing streak.

The Wizards, by contrast, were all out of sorts after the game, so much so that Arenas left the locker room before it was open to reporters.

Wednesday was supposed to a celebration of the three-time All Star's surprise comeback after 66 games sidelined with a knee injury.

The crowd was thrilled by his every move and by each of his 17 points, but Washington was outscored by 15 points during his 19 minutes on the court and blew the 95-86 lead it had when he entered the game for the final 7:23.

Still, all seemed well when Arenas made two free throws with 15 seconds remaining to give the Wizards a one-point lead.

"The script was planned out the right way," Wizards guard Roger Mason said. "He hit the two free throws at the end of the game, and I kind of thought that was the end. A great story line: Arenas back. But Sessions hit a crazy shot at the end."