(Reuters) - American Marina Alex was "super happy" after finding herself in uncharted waters with the halfway lead at the Manulife LPGA Classic in Ontario on Friday. Another Thai, Ariya Jutanugarn, has dominated the LPGA recently, with five victories since May, including the Canadian Women's Open on Sunday, and she remained in contention for another win, four strokes behind after a 68. "This I think is the lowest I've shot out on the LPGA ... definitely the best round I've played in a long time," she said after finishing with a flourish, sinking a long birdie putt at her penultimate hole, before striking a nice five-wood into the par-five ninth. More...