Belt knocked an opposite-field homer to left-center and added a double to about the same spot, and that was after he'd already drawn a walk and singled off White Sox left-handed ace Mark Buehrle in the Giants' 5-3 victory.
Now batting .302 with two homers on the spring, the 22-year-old continues to make it a tough decision whether he'll make the Opening Day roster.
"It's not just today," Giants manager Bruce Bochy said. "He's played well. He's had good at-bats. I mean, this thing, it's going to go probably down to the last few days before we know which way we're going to go. He's doing what he can do, and that's play good baseball."
2010 Spring Training - null
Sights & Sounds
Spring Training Info
What he obviously can control is his bat. Stinging balls to the opposite field with pop is a sure sign of a hitter who knows how to handle the bat.
"That's what he does well," Bochy said. "Good hitters, the bat stays in the zone longer than most."
Belt was a little more humble about his opposite-field shots on this day.
"Sometimes it shows that I'm watching the ball all the way in, but today it shows I was a little late on the fastball," he said of his homer off right-hander Jeff Gray and his double off right-hander Brian Bruney. "It ended up working out for me."
He doesn't have to work much more at impressing Giants starter Tim Lincecum, who said he could envision Belt making the roster and playing first base as he makes the Opening Day start.
"From the way he's been playing, yeah," Lincecum said. "I think it's just a matter of getting out there and getting experience. I think this should help him tremendously going through camp like this and seeing all these different pitchers. He's just done nothing but impress me."