Belt's addition increased the Giants' All-Star contingent to four. He'll join left-hander Madison Bumgarner, right-hander Johnny Cueto and catcher Buster Posey.
"I can't believe that I'm an All-Star this year," Belt said. "It's pretty cool. Especially to step back and think about how many fans voted, how many times they voted, how many messages I got of how their thumbs were numb. ... It was kind of overwhelming to see all that support. I want them to know that it didn't go unnoticed. I did see that stuff.