1. Preheat grill.
2. Coat chicken and grill rack with cooking spray. Grill chicken 20 minutes or until done, turning once.
3. While chicken grills, combine vinegar and remaining ingredients in a medium saucepan, stirring with a whisk. Bring to a boil; cook 4 minutes or until reduced to 1/3 cup.
4. Transfer chicken to a large bowl or pan. Pour sauce over chicken, turning to coat.