Tsitsipas shows win over Federer no fluke

MELBOURNE - Lest anyone get the idea that Stefanos Tsitsipas' upset of Roger Federer was a fluke, the 20-year-old Greek followed it up by beating No 22 seed Roberto Bautista Agut 7-5, 4-6, 6-4, 7-6 (2) at the Australian Open on Tuesday to become the youngest Grand Slam semifinalist since 2007.

"That was a great win. It got people's attention," Tsitsipas said about his fourth-round stunner against two-time defending champion Federer on Sunday.

"My biggest challenge was to stay concentrated, stay focused in order to show it didn't happen accidentally."