The San Francisco Giants announced Friday that catcher Buster Posey has been placed on the 10-day injured list retroactive to Tuesday with a left thumb contusion.
Right-handed pitcher Logan Webb has been reinstated from the injured list in a corresponding move.
Posey, 34, will enter the All-Star break slashing .328/.421/.547 with 12 home runs and 28 RBI.
Curt Casali should receive the lion's share of the playing time behind the plate for the Giants during the three-time World Series champion's absence. Chadwick Tromp moves into the backup role.
Posey is such a crucial cog in the middle of the San Francisco offense that any type of extended stint on the injured list would limit the club's offensive upside during the 2021 season.