U.S. Open champion Naomi Osaka booked a spot in the China Open semifinals following a hard-fought, three-set victory over home favorite Zhang Shuai on Friday.World No. 6 Osaka, who represents Japan, fought from a set down to beat China's world No. 45 Zhang 3-6, 6-4, 7-5 in a match lasting more than two and a half hours at Beijing's National Tennis Center.The eighth-seeded Osaka started slow, committing 22 unforced errors in the first set against Zhang's eight.They split the first eight games in the second set, but Osaka held off Zhang and claimed two games in a row. Osaka powered to victory…READ FULL ARTICLE