Burriss hit .214 in 52 games before getting designated for assignment July 28. Having played with the Giants since 2008 and being popular with teammates, Burriss got a warm reception when he arrived in the clubhouse before Tuesday's game against the D-backs.
"It's good to see these guys again," Burriss said. "Sometimes you don't know when the next time you'll see your friends and teammates again, and it's good to be back with these guys in the clubhouse again."
Burriss was hitting .274 in 29 games with Fresno before getting called up again, which he found out about Tuesday morning. He is expected to be used as a utility infielder, specifically as a pinch-runner and defensive replacement.
"He's been playing well," Giants manager Bruce Bochy said. "He went down to Fresno and played hard and played well. He earned this."
The Giants now have 34 players on their active roster, including 17 pitchers. Otero started the season on the Giants' Opening Day roster and begins his third stint with the Giants this season, while Runzler still has yet to appear in a Major League game this season after missing the first two months of the season with a shoulder injury.
"We have a pretty big bullpen now," Bochy said. "I think we used just about everybody yesterday, so they can help."