MELBOURNE, Australia – Within an hour of her third-round loss at the Australian Open, defending champion Naomi Osaka had consigned it to the past. Osaka had two match points against 60th-ranked Amanda Anisimova in the third set Friday, and she missed two backhands. Anisimova held serve to force a tiebreaker, which she dominated, and finished with an ace for a 4-6, 6-3, 7-6 (5) comeback victory over the fourtime major champion. In doing so, the 20-year-old American ensured that the so-called final-before-the-final – a much-anticipated fourth-round showdown between Osaka and top-ranked Ash Barty – won’t happen.