 In 2005, he was promoted to Fort Myers Miracle, the Twins Advanced A affiliate, and then to the New Britain Rock Cats, the Twins Double-A affiliate.In 2006, Span returned to the Rock Cats, but was promoted Triple-A Rochester Red Wings in 2007.Throughout the 2008 spring training, Span was competing with Carlos Gómez to be the Twins' starting center fielder, but ultimately lost out to Gomez and was outrighted to AAA.