The Pirates selected Simon's contract from Triple-A Indianapolis on Wednesday.
Pittsburgh released designated hitter Marcell Ozuna to clear room on the 40-man roster and 26-man active roster for Simon, who will be up in the big leagues for the first time in 2026. The 26-year-old posted an .883 OPS with eight home runs and 32 steals at Triple-A this season and should offer the Pirates some versatility off the bench. Simon is a switch hitter who is capable of playing multiple infield and outfield spots.