KAVARNA, Bulgaria (Reuters) - Britain's Graeme McDowell came from behind to win his maiden World Match Play Championship with a 2 & 1 victory over Thailand's Thongchai Jaidee on Sunday. Former U.S. Open Champion McDowell, the highest-ranked player in the field, battled back from two holes down after four and one at halfway to secure his eighth European Tour title. "I'm very excited because it's ...