'Humbled' Naomi Osaka won't 'hang around' without wins

(Photo credit: Robert Deutsch-Imagn Images)
Four-time Grand Slam champion Naomi Osaka isn't inclined to "hang around" in professional tennis if her results aren't on par with her expectations.

Osaka, 27, is returning from a two-month absence due to a back injury, playing at the ASB Classic. The Japanese star will square off against Lina Glushko of Israel on Monday in Auckland, New Zealand.

Osaka admitted to being "humbl