SAN FRANCISCO -- First baseman Brandon Belt was the recipient of Joaquin Arias' throw from third to seal Matt Cain's perfect game in Wednesday's 10-0 win against the Astros.

Immediately after, Belt tucked the ball in his back pocket before joining his teammates in mobbing Cain on the mound.

"I had thought about that before the last out," Belt said. "I just wanted to give Matt the game ball so I put it in my pocket so it wouldn't fall out. I didn't want someone stepping on it and rolling an ankle."

Belt gave the ball to Cain when the celebrations wound down in the clubhouse.

"I asked for a Corvette but he said he wouldn't give me one," Belt said.

Many of the game's souvenirs, including Cain's hat and glove, were sent to the Hall of Fame, while Cain got to hold on to the game ball.

"He was trying to keep it and put it on eBay," Cain said with a smile. "That's Brandon for you."

Belt said he had never been more nervous on a baseball field than at the end of Cain's historic outing, but he was more than excited to be part of it, especially the last out.

"That was pretty cool. It's hard to explain," Belt said, adding that he had watched the replay of the last out at least 15 times. "You watch that stuff on TV, and you think about how you're going to feel for your teammate. Honestly, it was one of the best feelings. It was pretty cool. Seeing how excited he was after the game was just awesome, and I'm glad I could get him the ball."

Huff injures knee in perfecto celebration

SAN FRANCISCO -- One negative development emerged from Matt Cain's perfect game: First baseman Aubrey Huff fell and bruised his right knee as he tried to scale the dugout railing for the postgame celebration.

Results of an MRI that Huff underwent Thursday were not immediately available. But manager Bruce Bochy said, "He's pretty sore. Which is not good news."

With nine road Interleague games in 10 days coming up on the Giants' schedule, Bochy had intended to use Huff frequently as a designated hitter. Bochy admitted that Huff's injury has forced him to re-evaluate his plans.

Though Bochy wouldn't say who he was considering at DH instead of Huff, he's likely to use Hector Sanchez, Buster Posey and Pablo Sandoval at that spot. Sanchez could benefit from the extra at-bats; Sandoval and Posey would be able to rest their legs while still having potential impact as hitters.

Huff, 35, is batting .155 (9-for-58) with one home run and five RBIs in 32 games, including 14 starts.