Nolan McLean delivered a gem for six innings Thursday night at Citi Field, shutting out the Arizona Diamondbacks and putting the New York Mets in prime position to secure a series victory. But baseball is a game of endurance, and once McLean exited, the Mets' bullpen unraveled in dramatic fashion.

Arizona erupted for seven runs across the seventh and eighth innings, turning a tight 1-0 duel into a decisive 7-1 win to claim the three-game set. McLean was saddled with the loss after the two runners he left on base in the seventh came around to score—a cruel twist for a starter who had done his job so well. In today's game, six shutout innings should be a winning formula, but the Mets' supporting cast couldn't seal the deal.

The collapse began in the seventh. With a narrow 1-0 lead, a leadoff walk and a single ended McLean's night at 100 pitches. Reliever Luke Weaver entered to face former Met James McCann, but Arizona countered with pinch-hitter Gabriel Moreno, who ripped a game-tying RBI double. That opened the floodgates for a four-run rally, fueled by a costly errant throw from Mark Vientos and timely hits from Alek Thomas and Jose Barrosa.

Stunned, the Mets' offense had no answer, stranding Francisco Lindor in the bottom of the frame. The nightmare continued in the eighth when Luis Garcia surrendered three more runs, prompting boos from the chilled Citi Field faithful. An early solo homer from Luis Robert Jr. off Eduardo Rodriguez proved to be the Mets' only offense, a recurring issue for a lineup that has struggled to sustain rallies.

This loss underscores a frustrating pattern for the Mets: brilliant starting pitching often wasted by bullpen volatility and inconsistent offensive support. As the team looks to find its rhythm, the focus turns to tightening late-game execution and providing more reliable run production. For now, it's a tough lesson in closing out games—a fundamental the Mets will need to master as the season progresses.