With his lower back injury healing daily, Hummel was selected for the USA Men's 2009 World University Games in Belgrade, Serbia under Wisconsin head coach Bo Ryan. Along with the likes of fellow Big Ten players Evan Turner and Talor Battle, Hummel helped lead Team USA to the Bronze medal against Israel, finishing with a 6–1 record. Pulling down a team single-game-high ten rebounds, he averaged 7.3 points and 3.4 rebounds per game.