Robert Gsellman is likely done for the season after a source revealed he has suffered a partial lat tear, per Andy Martino of SNY.tv (via Twitter). Gsellman was placed on the 10-day injured list retroactive to Wednesday with what was classified at the time as tight right triceps.
The 26-year-old has 14 saves and 22 holds between this year and last as one of Mickey Callaway’s go-to options late in games, but his record is hardly spotless. He’s registered 10 blown saves over that same span. This season, he’s been called upon 52 times for 63 2/3 innings with a 4.66 ERA/4.13 FIP/4.67 xFIP.
Gsellman was hardly an ink-printed stopper for the Mets, but he was a security blanket for Callaway. Gsellman leads the bullpen in innings pitched while he is tied with closer Edwin Diaz for the most appearances. Diaz and Seth Lugo are locked into setup and closing roles, but Gsellman leaves some high-leverage innings opportunities that the Mets will have to back-fill. Veterans Jeurys Familia, Justin Wilson, and newly-signed Brad Brach have pitched below expectations thus far, but there’s a good chance the trio will be first in line to fire some of the bullets left behind by Gsellman.
The loss of Gsellman adds yet another wrinkle to a Mets bullpen that has struggled for most of the season. Like their comrades in the NL East, the Mets field a bottom-10 unit by measure of fWAR (27th), HR/9 (23rd), ERA (27th), FIP (25th), and xFIP (26th).