Peterson Struggles Continue as Mets Fall to Diamondbacks 7-2

The New York Mets early season struggles at Citi Field continued Wednesday night as left-handed starter David Peterson endured another difficult outing in a 7-2 loss to the Arizona Diamondbacks.

Peterson, who has battled inconsistency dating back to last season, surrendered five runs over five innings of work in what marked his second consecutive poor performance. The southpaw appeared to settle down after early trouble, managing to complete five frames, but the damage was already done against a Diamondbacks lineup that capitalized on his mistakes.

The veteran starter command issues were evident from the first inning, as Arizona jumped on him early and built a comfortable lead that the Mets offense would never seriously threaten. Peterson struggles have become a growing concern for manager Carlos Mendoza, who faces difficult decisions about the rotation future construction.

Sean Manaea, typically a starter himself, was pressed into relief duty and pitched four innings to complete the game. However, Manaea extended relief appearance came with its own complications, as he allowed two additional runs that put the contest further out of reach. The unusual usage pattern reflects the Mets current staff management challenges as they try to navigate the early portion of the schedule.

The loss puts additional pressure on the Mets five-man rotation strategy, which the organization has committed to maintaining in these early weeks to keep pitchers on their regular schedules. However, with both Peterson and Manaea showing signs of rust and inconsistency, that plan may require adjustment.

Offensively, the Mets managed just two runs against Arizona pitching staff, continuing a pattern of struggling to generate consistent production. The lack of offensive support has magnified the pitching staff early-season issues and created additional pressure on the starters to deliver quality outings.

Looking ahead, the Mets will turn to Nolan McLean for Thursday night contest as they attempt to salvage the series. McLean will face Eduardo Rodriguez in what represents a rematch of last year World Baseball Classic final, adding an intriguing subplot to the series continuation.

The Peterson situation has become particularly concerning given his extended struggles that began during the 2025 campaign. Questions are mounting about how long the organization can afford to run him out every fifth day while hoping for improvement that has not materialized.

J.D. Martinez, now serving in a special assistant role, has emphasized his desire to provide veteran leadership and mentorship within the clubhouse during this transition period. His presence could prove valuable as younger players like Carson Benge work through their own early-season adjustments.

For the Diamondbacks, the victory represents a solid road performance as they continue building momentum for what they hope will be a successful campaign. Their ability to capitalize on Peterson early mistakes while maintaining pressure throughout the game demonstrated the type of opportunistic offense that wins games consistently.

The Mets now face the challenge of regrouping quickly, as rotation depth may be tested if current trends continue.