After a few years with the Mets, Robert Gsellman signed a minor league deal with the Cubs in Spring Training. Previously with the New York Mets, Gsellman mainly pitched in the minors. He made his major league debut late in the 2016 season but struggled in 119 2/3 innings. He spent the remainder of the season working out of the bullpen. He is the son of former MLB pitcher Bob Gsellman. Bob attended Westchester High School in Los Angeles.