Fifty-two years ago, Tug McGraw gave the Mets their rallying cry with three little words: Ya Gotta Believe. This team has stumbled through the past month, searching for something to hold onto with 17 games left. And in that tunnel, manager Carlos Mendoza delivered a challenge to Sean Manaea: he told him to fight. The Mets don’t just need innings or runs right now. With 17 games to go, this team needs to fight and believe it can get the job done.