Peterson threw four scoreless innings in relief of Taijuan Walker (shoulder) during Monday's 5-4 loss to the Phillies, allowing three hits and two walks while striking out three.

EDGE Analysis

Walker left the game after two innings, forcing Peterson into the game with the Mets holding a 3-0 lead. The southpaw was sharp, tossing 32 of 58 pitches for strikes, and he was in line for the win until the bullpen fell apart late. If Walker is forced to miss additional time, something that should become clearer after he undergoes an MRI on Tuesday, Peterson figures to be next in line to take his spot in the rotation.