Naomi Osaka was unable to turn aggressive play into her first win at the WTA Finals on Wednesday, as she fell to 0-2 in group play with a loss to Germany's Angelique Kerber.The 6-4, 5-7, 6-4 win was the first for Kerber after the world No. 2 blew a one-set lead on Monday, losing to ninth-ranked Kiki Bertens of the Netherlands. Bertens played Sloane Stephens in the day's final red group match at Singapore Indoor Stadium.Although Osaka fired six aces and 42 winners to Kerber's 24, she also made 50 unforced errors to Kerber's 30 and failed to convert 13 of her 18 break points.On the verge of b…READ FULL ARTICLE