Mahan Defeats McIlroy for Match Play Title (AP) - Hunter Mahan stopped Rory McIlroy's march to No. 1 by winning the Match Play Championship on Sunday. Mahan built a 4-up lead through 10 holes at Dove Mountain, then held off McIlroy, a 22-year-old from Northern Ireland, to capture his second World Golf Championship title. McIlroy defeated Lee Westwood, 3 and 1, in a semifinal match Sunday morning. He could have replaced Luke Donald at No. 1 in the world by winning the tournament. But he fell behind with a series of mistakes on the front nine against Mahan and could never catch up. With his 2-and-1 victory, Mahan becomes the first American to win the Match Play Championship since Tiger Woods in 2008. He is the sixth player to win multiple W.G.C. titles, and he moves into the top 10 for the first time. Mahan defeated Mark Wilson, 2 and 1, in their semifinal.