Devendorf went undrafted in the 2009 NBA draft. On December 26, 2009, he was acquired by the Reno Bighorns of the NBA D-League. He made his debut the same day, scoring just 2 points in 14 minutes of action, as the Bighorns defeated the Tulsa 66ers 102-87. On January 4, 2010, he was waived by the Bighorns.