Trim fat from pork. Combine pork and next 7 ingredients (pork through garlic) in a large zip-top plastic bag. Seal and marinate in refrigerator 4 hours, turning bag occasionally. Remove pork from bag, reserving marinade.
Place pork on a grill rack coated with cooking spray; cook 7 minutes on each side or until done, basting frequently with reserved marinade. Serve with Summery Peach Salsa.