Japan's Ai Miyazato finished in a four-way tie for 66th with a 2-under 211 total at the NW Arkansas Championship won by South Korea's So Yeon Ryu Sunday, but remained positive as she continues her search for a first major title.Miyazato, who will retire at the end of this season, got off to a birdie start on the par-4 first at the Pinnacle Country Club but hope quickly turned into frustration when she barely missed an 11-foot birdie putt on the next green.After tapping in her fifth for par on the second, Miyazato continued to struggle to find her rhythm. She found water with her second swin…READ FULL ARTICLE