The high school has the winningest summer baseball coach in Wisconsin high school history, Tim O'Driscoll. Through the 2009 summer season, he had compiled a 742–234 record, a .767 winning percentage. In 2006, Arrowhead's baseball team was the WIAA state runner-up after losing to Marquette. On May 25, 2007, before Arrowhead's game against Kettle Moraine, the school's baseball field was renamed O'Driscoll Field in honor of the coach. Arrowhead's summer baseball team advanced to the state tournament in 1973, 1975, 1979, 1999, 2000, 2006, and 2009, with title game appearances in 1973, 1975, 1979, 2006, and 2009. The Warhawks won the state title in 1979 by defeating West Bend East. They repeated that feat in the summer of 2009 by defeating defending 2008 champion Marquette.