Japan's Naomi Osaka claimed her second straight Grand Slam title Saturday with a 7-6(2), 5-7, 6-4 victory over the Czech Republic's Petra Kvitova in the Australian Open final.Following a closely contested first set, 21-year-old Osaka looked in control of the second at Rod Laver Arena before the 28-year-old No. 8 seed Kvitova fought back to force a decider.But No. 4 seed Osaka overcame problems with her serve to take the third and final set, guaranteeing she will be the first Japanese world No. 1 when the next WTA rankings are released.Thanking her team and her opponent, Osaka said she was "…READ FULL ARTICLE