Hideki Matsuyama earned his first victory in America and validation as one of golf's young stars Sunday with birdie on the 18th hole to force a playoff and a 10-foot par putt on the first extra to win the Memorial.Hideki Matsuyama earned his first victory in America and validation as one of golf's young stars Sunday with birdie on the 18th hole to force a playoff and a 10-foot par putt on the first extra to win the Memorial.