Pirates Pull Jake Mangum Right Before Diamondbacks Game

PITTSBURGH — The Pittsburgh Pirates made a late lineup change ahead of their final game of the first road series out west.

The Pirates scratched Jake Mangum from the lineup and put Billy Cook in his place in center field, minutes prior to first pitch against the Arizona Diamondbacks in the series finale at Chase Field on May 7.

Pittsburgh didn't initially give a reason as to why they made the change, but eventually revealed that Mangum had left hamstring discomfort Cook also made his second start in center field in 2026 and stayed eighth in the batting order vs. Arizona.

Mangum had taken the place of Oneil Cruz in center field, who is making his first start at designated hitter in 2026, while remaining the Pirates leadoff hitter.

Pittsburgh will still have Bryan Reynolds in left field and Ryan O'Hearn in right field, with just the center field the big difference for the outfield from a normal game.

What This Means for the Pirates vs. the Diamondbacks

This would've been the third start for Mangum in center field, as Cruz has mostly held down the position in 2026 with 34 starts, but he will instead miss this game for an unknown reason.

He has served as a versatile outfielder this season for the Pirates, starting 10 games and playing in 22 contests in left field, the two starts in center field and four starts in right field, appearing in 28 of the Pirates 34 games prior to this one.