Joakim Noah scored 16 points for the Bulls (2-2). Robinson started in place of Kirk Hinrich, who sat out with a sore right thumb.
Brandon Jennings, Samuel Dalembert and Mike Dunleavy each scored 13 points for the Bucks (2-1), who shot 41.9 percent from the field. Rookie John Henson exited with a left knee injury and did not return.
The Bucks pulled to 94-91 after a 14-4 run capped by Beno Udrih's two free throws with 3:02 left.
Robinson responded with a jumper, and Hamilton and Carlos Boozer each hit two free throws to put the game away.
