Lugo, more so than anyone else down in that ‘pen right now, has a chance to bring that stability. All that added up to Peterson, a career starter, being asked to face the 3-4-5 hitters in the Yankees’ lineup with a two-run lead in the eighth. Adam Ottavino pitched well for five outs Tuesday but remains vulnerable to the best left-handed bats. Drew Smith hasn’t maintained the pace he set at the start of the season. It’s no secret the Mets could use more stability in front of Edwin Díaz at the end of games. “That’s about as sharp in a high-intensity leverage situation, as good as you want to see a guy pitch,” Showalter said. I felt like I had really good confidence on where I was throwing it with my mechanics. Coming in after David Peterson had swiftly surrendered the lead Scherzer had so diligently preserved, Lugo recorded five critical outs to give the Mets a chance for the walk-off win. For much of the season, he just hadn’t looked as sharp with his stuff or command as he had back when he was New York’s lights-out late-game reliever. With Lugo? There’d been considerably more uncertainty about whether the right-hander could show off his vintage form. They know what they’re getting out of Scherzer, which is the same thing Scherzer’s been shoving for a decade. On a night when Max Scherzer got every big out he needed over seven scoreless frames, Lugo was the biggest positive for the Mets. On the side of the clubhouse, maybe with as big a smile as anyone after the Mets’ 3-2 walk-off win over the Yankees, was Seth Lugo. “It’s a little easier flight,” manager Buck Showalter said with a smile, “after a good game like that tonight.” The clubhouse postgame at Citi Field on Wednesday night was as celebratory as it’s been all season, cigar smoke wafting toward the ceiling, the din of pingpong filling the background of interviews as pizza was passed ahead of the late-night trip to Miami.