World Number Three Osaka reaches Australian Open semis

World number three Naomi Osaka warned Tuesday that she’s feeling confident and “at ease” after storming past Hsieh Su-wei in straight sets to book an Australian Open semi-final against either Serena Williams or Simona Halep.

The Japanese three-time Grand Slam champion overcame the Taiwanese world number 71’s unorthodox style 6-2, 6-2 in an all-Asian quarter-final at a crowd-less Rod Laver Arena.

Osaka hit 24 winners in a dominant display lasting just 66 minutes against her 35-year-old opponent, who made history by becoming the oldest woman in the Open era to debut in the quarter-finals of a Slam.

After being thrown off her rhythm early by the canny Su-wei, a focused Osaka took control and then cruised to victory in stark contrast to her fourth-round match where she needed to save two match points in a tense battle against last year’s runner-up in Australia, Garbine Muguruza.

“I think my confidence was raised after I played Muguruza the other day just because she’s such a quality opponent, and my back was against the wall,” Osaka said about coming back from 3-5 and 15-40 on her serve in the third set.