Seth Lugo doesn’t want this Mets closer job forever

It’s tough duty being a relief pitcher in the major leagues. You can be a hero one day, a bum the next. You’re only as good as your last appearance.

Seth Lugo was reminded of that Sunday night at Citi Field where his streak of 15 scoreless innings ended when he gave up a crucial run in the top of the ninth inning that proved to be enough for the Dodgers to escape with a 3-2 come-from-behind win.

It had to happen at some point. Lugo had been brilliant of late. He hadn’t allowed a run since Aug. 17 and had retired the Dodgers in order Saturday night to earn the win in the Mets 3-0 victory.

But after getting the final out of the eighth inning Sunday night, Lugo surrendered a run in the ninth when…