The Pirates reinstated Horwitz (concussion/hamstring) from the 10-day injured list Sunday. He'll start at first base and bat fifth for the series finale in Cincinnati.
Horwitz had been on the shelf since June 25 after suffering a left hamstring strain, but he was expected to return from the IL earlier in the week after completing a three-game rehab assignment. However, he sustained a mild concussion in his final minor-league contest July 25, prompting the Pirates to delay his activation until he was no longer exhibiting any symptoms. Now fully cleared, Horwitz should settle back in as the everyday first baseman after slashing .280/.386/.455 with 10 home runs, 36 runs and 33 RBI in 74 games prior to landing on the IL.