During the 2006 FIBA World Championship, Arroyo averaged 21.2 points, 4.6 rebounds, and 5.2 assists per game, in five games, for the Puerto Rican team. Arroyo finished tied for fourth in PPG during the 2006 FIBA World Championship with fellow Puerto Rican teammate Larry Ayuso. Arroyo played at the 2008 Olympic Qualifying Tournament, but wasn't able to compete in the semifinals and finals due to a leg injury.