Schlereth begins his first season with the Ducks and 11th in professional baseball. He comes to Long Island with four seasons of Major League experience, including one year with the Arizona Diamondbacks (2009) and three with the Detroit Tigers (2010-12). In 94 appearances, he compiled a 5-6 record with a 4.35 ERA, one save and 91 strikeouts over 93 innings of work. The Alaska native also made three postseason appearances with the Tigers in 2011 as Detroit reached the American League Championship Series. He made his Major League debut on May 29, 2009, pitching a perfect inning of relief against the Atlanta Braves.

The 31-year-old spent the 2017 season in the Miami Marlins organization, pitching at three different levels. He combined to post a 2.38 ERA in 37 games with five saves and 39 strikeouts over 41 and two-thirds innings of work. Entering 2018, the Colorado resident has accrued a 2.75 ERA, nine saves, 243 strikeouts and 219 and one-third innings pitched over 194 appearances in the minor leagues. Schlereth, who was drafted by the Diamondbacks in the first round (26th overall pick) of the 2008 amateur draft, is the son of 12-year National Football League veteran offensive lineman Mark Schlereth.