Honey Citrus BBQ Chicken

8 skinless chicken breast halves 1 cup ketchup 1 6 oz can frozen lemonade 2 tsp. honey 1/4 cup Worchestershire sauce 1/4 cup yellow mustard 2 tsp. olive oil 2 tsp. dried onion, minced Marinate chicken in the last 4 ingredients for 2 hours. Grill over low fire for 20-30 minutes. turning occasionally. Combine ketchup, honey and lemonade. Dip chicken into mixture and grill an additional 15 minutes, turning and basting frequently. Serves 8.