Lobstein begins his first season with the Ducks and 14th in professional baseball. The left-hander spent four seasons in the Major Leagues, including two with the Detroit Tigers (2014-15) and one each with the Pittsburgh Pirates (2016) and Washington Nationals (2021). He made 37 appearances (17 starts) in the big leagues, going 6-10 with a 5.22 ERA and 75 strikeouts over 129.1 innings pitched. The southpaw made his MLB debut on August 23, 2014, at Minnesota, tossing five and two-thirds innings in relief. He later earned his first MLB win on September 7, 2014, against San Francisco, pitching five and two-thirds innings of one-run ball.

The 33-year-old spent the 2022 season with Toros de Tijuana of the Mexican League. He pitched in 13 games (four starts), striking out 31 batters over 23.1 innings of work. Previously, the Arizona native was named an Organization All-Star in 2013. He also earned Pitcher of the Week honors three times in the Florida State League in 2011 and one time each in the Southern League (2012), Midwest League (2010) and New York-Penn League (2009). Lobstein was originally selected by the Tampa Bay Rays in the second round of the 2008 amateur draft.