The 26-year old threw 23 pitches to complete one inning while allowing no hits, no earned runs and no walks. Returning after 2011 Tommy John surgery and a fluke dislocated right ankle this summer, Chamberlain reached 97 MPH on the radar gun and struck out two batters. He did allow an unearned run.
"Just to feel comfortable and just to be in a game, I mean, really was the biggest thing," the 26-year-old told Newsday after his appearance. "So I was very pleased."