ノースウエストアーカンソー・ナチュラルズ
Mildren split his season three ways in 2008 pitching relief; first for the Omaha Royals, then the inaugural season of the Texas League Double-A Northwest Arkansas Naturals, and the High-A Wilmington Blue Rocks, ending the 2008 season with a combined ERA of 6.62 over 32 games.