The Giants transferred Winn (elbow) to the 60-day injured list Thursday.
Tidwell (0-2) took the loss Thursday against Pittsburgh, allowing two runs on two hits and five walks over five innings. He struck out five.
The Giants claimed Harris off waivers from the Red Sox on Thursday and optioned him to Triple-A Sacramento.
Volpe was lifted from a game at Triple-A Scranton/Wilkes-Barre on Wednesday with a right forearm contusion, Jorge Castillo of ESPN.com reports.
The Giants announced Tuesday that Bericoto (knee) has begun a hitting and throwing progression and will start running later this week, MLB.com reports.
Molina is listed as the Giants' starting pitcher for Saturday's game against the Mets, Justice delos Santos of The San Jose Mercury News reports.
Seymour logged a blown save in Wednesday's 5-4 extra-inning win over the Pirates, allowing one run on two hits while striking out one in 1.2 innings.
Whitcomb went 1-for-4 with a double in Wednesday's 5-4 extra-inning win over the Pirates.
Schlittler allowed one run on two hits and struck out nine without walking a batter over eight innings in a no-decision versus the Angels on Wednesday.
Bellinger went 3-for-5 with one RBI and two runs scored in Wednesday's 6-3 extra-inning win over the Angels.
