Esposito was a member of the Flock during the 2010 campaign and posted a 3-4 record with a miniscule 2.98 ERA and 53 strikeouts in 48.1 innings over 25 games (four starts). His efforts earned him a contract with the Philadelphia Phillies organization, where he combined to go 2-2 with a 2.72 ERA in 14 games (five starts) with the Single-A Lakewood Blue Claws and Clearwater Threshers.

The Mineola native began last season with Clearwater, compiling a 2-2 record with a 3.55 ERA in 21 games (two starts) before being promoted to Double-A Reading. The 26-year-old spent three years in the Baltimore Orioles organization and has a 24-20 career record with a 3.40 ERA and 405 strikeouts in 375.1 innings. A graduate of NYIT, Esposito was signed by the Orioles as an undrafted free agent in 2007.