David Peterson to start for Mets versus Phillies

Peterson won for the second time in four starts for the Cubs and the fifth time overall this season. He still has a 5.57 ERA for his new team, but 10 of the 13 runs he’s surrendered came in one start versus the Cardinals. Tonight’s effort ensures that he’ll stick in the rotation with Aaron Civale around, and he’ll get a chance for some revenge against the Cardinals on Monday.

Myers threw 22 pitches over two innings while giving up a pair of runs against the Red Sox on Saturday and was unlikely to be available for Sunday’s first half finale, so the Mets opted to swap him out for a fresh arm. Myers sports a miserable 6.26 ERA, 1.39 WHIP and a 33/13 K/BB ratio over 46 innings with the Mets this season.

Myers will rejoin the low-leverage reliever mix for the Mets over the weekend. He has a 6.21 ERA in 42 innings and has been as disappointing a part of the Freddy Peralta trade as Freddy Peralta has so far.

Tyler O’Neill crushed a second-inning offering from Peterson for the lone run. Despite the walks, the Orioles only managed two at-bats with runners in scoring position. Peterson’s now alternated two decent starts with the Cubs against one mega-clunker that has his season ERA at 6.45. Even with the improvement, we’re not ready to recommend him in fantasy leagues.

Myers threw two innings on Wednesday, allowing one run on three hits while striking out one and walking one. The Mets will bring up a fresh arm from the bullpen for the weekend.

The Mets were counting on Myers to provide length out of their bullpen this season, but he has pitched to a 6.21 ERA in 42 innings. His results were much better in nine innings at Triple-A, so the team will hope he can carry that over into his MLB innings.

Peterson’s second start as a Cub did not go nearly as smoothly as his first. He allowed three runs apiece in each the second and third innings on his way to an ugly 10 spot. That rally in the second was the most frustrating because Peterson retired the first two batters he faced and had the Cardinals’ seven, eight, and nine hitters coming up. Suddenly, a double, single, and homer turned into three runs. Similarly, before being yanked in the fourth, he got two quick outs and then proceeded to walk three consecutive batters. Then he was pulled after a run-scoring single and reliever Bryse Wilson gave up a home run to let that last two inherited runners score. In the end, Peterson had poor command and was hit hard just like in many of his other starts this season.

Peterson gave up five hits, walked none and struck out two. He improved to 4-6 with the win. Peterson’s Cubs tenure got off to a rocky start when Jackson Chourio homered on the first pitch he threw in Cubs blue. The 30-year-old left-hander was able to settle in and pitch into the sixth inning before handing it off to the bullpen with a 6-2 lead. Peterson has a 5.86 ERA, but his 4.04 xFIP points to a potential bounce back. He’s lined up to face the Cardinals at home next weekend.

It’s a decent spot for Peterson to make his Cubs debut since Milwaukee ranks 22nd as a team in OPS against left-handed pitching this season. The 30-year-old southpaw was acquired from the Mets to shore up Chicago’s injury-ravaged rotation earlier this week. His immediate fantasy appeal is strictly limited to deeper mixed leagues given his struggles this year, but it’s possible a change of scenery helps him get back on track.

Peterson joins a beleaguered Cubs’ rotation to provide some stabilization, but it’s worth noting that he’s been far from a reliable option for most of 2026 with a 6.09 ERA and 1.65 WHIP over his 68 innings with New York prior to the move. The left-hander has had success in the past prior to this year’s scuffles, and because of the litany of injuries to the Chicago staff, he’s going to be given some runway. He should make his debut for the Cubs in the coming days.