Defending champion Naomi Osaka safely advanced to the third round, but Kei Nishikori was sent packing as the two players from Japan completed their opening matches at the Miami Open on Friday.In women's action, World No. 1 and top seed Osaka defeated Belgian qualifier Yanina Wickmayer 6-0, 6-7(3), 6-1 to book herself a third-round clash with 27th seed Hsieh Su-wei of Taiwan. Hsieh beat American Alison Riske 6-2, 7-5."Of course I'm really happy that I was able to win the match," said Osaka, who hit 14 aces against the 141st-ranked player but also threw her racket in a fit of pique when Wickm…READ FULL ARTICLE