The Los Angeles Angels have fired their longtime visiting clubhouse manager after an internal investigation confirmed that he was providing ball-doctoring substances to opposing pitchers, according to sources.

Major League Baseball initially informed the Angels last week about allegations that Brian Harkins, who had been with the clubs for 30 years, was providing illegal sticky substances in the visiting clubhouse.

Harkins, known throughout the game as "Bubba," joined the Angels as a bat boy in 1981 and returned to the organization as a clubhouse manager in 1986.