Gsellman (3-2) tossed seven scoreless innings Sunday, scattering three hits and two walks while striking out eight in a 17-0 rout of the Phillies.
He now has a 2.17 ERA and 28:10 K:BB in 29 innings across five September starts, playing a huge part in keeping the Mets in the thick of the wild-card hunt despite all the injuries to their rotation. He'll take on the Phillies once more Friday, this time on the road, to close out his regular season.