The New York Mets have designated left-handed reliever Jake Diekman for assignment following a series of poor performances, despite his recent heroics in the Subway Series against the Yankees. Diekman, who held a 5.63 ERA in 43 appearances this season, struggled with command, issuing 24 walks in 32 innings. To replace him, the Mets called up 31-year-old left-hander Matt Gage, recently acquired from the Dodgers. Gage has shown promise, posting a 3.42 ERA in Triple-A this year and a history of strong performances with the Blue Jays and Astros. The Mets continue to overhaul their bullpen with the trade deadline looming, seeking more reliable options. Diekman's departure underscores the team's urgent need for bullpen stability amid a challenging season.