In the first start of his senior year at Cleburne (Texas) High school, Dillon tossed a no-hitter. Hell fell one out short of a perfect game.
With the Kansas City Royals, Dillon was one of two major-league pitchers in 2016 to record at least 14 starts and 19 relief outings, joining Baltimore’s Dylan Bundy. He became one of just 11 Royals ever to meet those marks and the first since Bruce Chen in 2013. On April 27, 2015 with the New York Mets, Dillon needed just 70 pitches (57 strikes) to go 7.2 innings in an outing at Miami. He became just the second MLB pitcher to throw 70 pitches or fewer in an outing of at least 7.2 innings since 1989, joining Greg Maddux (August 13, 2006 vs. San Francisco). Dillon was named the Opening Day starting pitcher for the Mets in 2014.
His father Kevin Gee is a fireman in Fort Worth, TX.