Japan's Chisato Iwai secured her first win on the U.S. LPGA Tour on Sunday after topping the leaderboard by six strokes at the Mexico Riviera Maya Open.The 22-year-old LPGA rookie started the day a shot back in second and carded seven birdies and a bogey for a 6-under 66 in the final round at the par-72 El Camaleon Golf Course in Mayakoba, wrapping up with a 12-under total of 276."I wouldn't have thought I'd be able to win a tournament this early (in my career). I'm really happy," said Iwai, whose celebration included a champagne shower courtesy of her team members and older sister Akie, wh…READ FULL ARTICLE