Robert John Gsellman was born July 18th 1993 in Santa Monica, California. The six foot four right handed pitcher, was a star baseball player & basket player at Westchester high school in California. He batted .649 in his junior year & was noticed as a star athlete getting named to ESPN's Rise underclassman All California team.
In 2011 he was drafted by the New York Mets in the 13th round. He remained at the A ball level playing with the Kingsport Mets, Brooklyn Cyclones, St. Lucie Mets & Savannah Sand Gnats through 2014. In that time he developed his two seamed fastball.
After posting an impressive 6-0 record with a 1.76 ERA, at St. Lucie in 2015, he was promoted to AA Binghamton where he went 7-7 with a 3.51 ERA. His wild ride on 2016 began at AA Binghamton where he went 3-4 with a good 2.71 ERA.
He was brought up to AAA Las Vegas, a hitters paradise, where he was just 1-5 with a 5.73 ERA.
In late August he was brought up to the Mets staff to replace the latest Mets pithing casualty; Steven Matz. The Mets had already lost Matt Harvey & Jacob deGrom. On August 23rd he made his MLB debut, coming in relief for Jonathan Neisse who had pain in his knee. Niese would also go down for the season.
The young man who resembled Jacob deGrom due to his long hair found himself in the big leagues, filling some big shoes in a pennant race in the worlds largest stage.
In that first game Gsellman would pitch from the 1st thru the 4th inning shutting out the Cardinals in St. Louis, earning his first win. The Mets swept the series & turned their season around on their way to capturing the NL wild card top spot. His next game wasn't so good, as he lost to the Philadelphia Phillies.
On September 3rd, he found himself in a big spot at Citi Field, taking on the first place Washington Nationals. Gsellman pitched six innings, allowing just a run, walking three with six hits & four strike outs as the Mets went on to a 3-1 win. The Mets offense was led by a two run Curtis Granderson single. On September 9th he got no decision allowing four runs in a 6-4 Mets win at Atlanta.
After another no decision in Washington where he pitched five shut out innings, but the Mets lost 1-0 to Tanner Roark, he took another loss to the Braves.
On September 25th, he had an outstanding performance, pitching seven shut put innings & striking out eight Phillies in the Mets 17-0 rout over the Phils. Impressively he also retired 16 of the final 18 batters he faced. Gsellman even got his first MLB hit when he bunted safely off pitcher; Jake Thompson in the 3rd inning. That win once again put the Mets atop the NL's top wild card spot.
On Friday September 30th, the Mets guaranteed themselves of at least playing for a wild card tie breaker, as the beat the Phillies in Philadelphia 5-1. Gsellman allowed seven hits but pitched out of trouble as he would allow just one run. He struck out seven & earned the victory.
Gsellman came out of no where in 2016 & gave the Mets a chance every time he took the mound in September. He was 4-2 pitching in eight games, striking out 42 batters while walking 15 in 44 innings posting a 2.42 ERA.
After the Mets season ended, Gsellman under went arthroscopic surgery on his non throwing shoulder to repair a torn labrum.