The AppleSox began play in 2000 and joined the Pacific International League. The AppleSox marked the return of baseball to the Wenatchee Valley for the first time since the Wenatchee Chiefs suspended operations after the 1965 season. The AppleSox were a member of the PIL until 2004, when the team left the league to become a charter member of the West Coast League. The team has enjoyed on-field success under head coach Ed Knaggs, who joined the team in 2001. The team won the PIL Championship in 2003 and has won five WCL Championships in the league's eight-year history, including back-to-back titles in 2009 and 2010.
The fans at Paul Thomas Sr. Field take a special liking each year to the AppleSox first base-coach, giving him a loud ovation each time he jogs to the coaches box. The tradition began with the fans in section A along the first baseline in 2006 and has spread across the entire stadium.