Naomi Osaka's Australian Open victory on Saturday has already been a boon to some of her sponsors as they capitalize on the newly crowned world No. 1's rising fame.

Models of the Adidas AG tank top, wristband, skort and sun visor worn by Osaka during the tournament have been flying off the shelves at a Windsor Racket store in Shibuya Ward, Tokyo, said Masahito Yamazaki, head of the planning division at Windsor Corp.

"Her tennis apparel appeared on the storefront around her second or third match and it sold out," Yamazaki said. "As she made to the next round, more customers contacted us about them, so we had more shipped in. By Sunday noon, everything was sold out."