China's Yin Ruoning produced a flawless final round with four birdies to win the Women's PGA Championship at Baltusrol Golf Club on Sunday and claim her first major title. Having started the day three strokes back from the lead, Yin pumped her fist as she drained a birdie putt on the par-five 18th, carding a four-under par 67, before waiting for her competitors to finish in Springfield, New Jersey. Japan's Yuka Saso (66) finished one stroke back in second after a bogey on