After losing an arbitration case to get his job back, Davidson re-entered the minor league system in 2003. He worked the Northwest League in 2003 and the Midwest League in 2004. In 2005 he was assigned to the Florida State League but did not work any games in the league because of fill-in work at the Major League level. In 2006 he was promoted to the Texas League but again worked only MLB games. Tom Hallion and Ed Hickox are now the only umpires who are working their way toward regaining a contract after losing their jobs in 1999.