Naomi Osaka beats Serena Williams in Australian Open semifinals

Naomi Osaka has stopped Serena Williams' latest bid for a record-tying 24th Grand Slam singles title in the Australian Open semifinals.

Osaka reached her fourth major final by beating Williams 6-3, 6-4 to stretch her winning streak to 20 matches.

Williams grabbed the first two games before Osaka took control with a five-game run.

Osaka broke Williams to begin the second set and was on her way.

Williams' forehand was off the mark all match and she finished with totals of 24 unforced errors and just 12 winners.

Williams won her 23rd major championship at Melbourne Park in 2017 but remained one behind Margaret Court's mark for the most in history.