Entering last night’s game against the Miami Marlins, Robert Gsellman had a first inning ERA of 10.38 on the season. When Dee Gordon slapped an infield single with an 0-2 count in the first inning, it seemed inevitable that ERA would increase.

Three runs ended up scoring that inning, thanks to a Justin Bour two-RBI single and a Martin Prado RBI double. Gsellman then pitched scoreless second and third innings, which had been the trend this season.

Going into last night’s game, Gsellman had an ERA of 2.08 in the 2nd inning and 2.08 in the 3rd. It then would slightly increase to 3.46 in the 4th before exploding to a 16.20 mark in the 5th and 6.23 in the 6th.

He wouldn’t be able to make it to the fourth inning, however, as in trying to beat out an infield single in the top of the frame, Gsellman came up limp a few strides away from first base with a hamstring injury.

“Running down the line I felt it tighten up a little bit,” Gsellman said after the game, noticeably frustrated. “It’s not too bad at all compared to the last time I pulled my hamstring so I shouldn’t be out too long.”

With Justin Bour on first base in the first inning, Gsellman was not helped much by his left fielder. Martin Prado lined a base hit down the line and with Bour, not a slow runner, chugging around second, Yoenis Cespedes jogged after the ball only to get to it and lightly toss it back into the infield, taking his time allowing the run to score. If he had hustled, there certainly would have been a play at the plate.

After being hurt by his defender’s lack of hustle behind him, he was determined to show his own hustle in the fourth inning by trying to beat out an infield hit but pulled his hamstring.

“He was running hard, I salute him for that,” manager Terry Collins said after the game. “He had a chance to beat that play out and create a big inning for us, but just another frustrating night as far as injuries go.”

With the outing, Gsellman’s ERA inflates to 6.16 on the season. Neil Ramirez was credited with the loss as the Mets had tied the game at three in the top of the 7th inning and he was brought in to preserve the tie score – and failed. At this time there is no timetable for Gsellman’s return, but this does mean that Rafael Montero will likely get another start.