Anthony John Arnerich (born December 14, 1979) is an American baseball coach for the Seattle Mariners of Major League Baseball. A California native, Arnerich left the state after junior college to continue his education in Texas. After his junior year there, he contracted with the Kansas City Royals and played for minor league baseball teams in Iowa, Delaware, and Kansas from 2001 to 2004. Arnerich then joined the Florida Marlins and played minor league in North Carolina and Florida in 2004 and 2005.