Heat grill. In large bowl, combine all ingredients except barbecue sauce; mix well. Shape mixture into 6 patties, 1/2 inch thick.
When ready to grill, lightly oil grill rack. Place patties on gas grill over medium heat or on charcoal grill 4 to 6 inches from medium coals. Cook 10 to 12 minutes or until burgers are thoroughly cooked, turning once and brushing each side occasionally with barbecue sauce.