Nine-time champion Novak Djokovic has reached the Australian Open semi-finals, sweeping aside fifth seed Andrey Rublev in a devastating display.

Serbia’s Djokovic occasionally cut a frustrated figure but channeled his emotions into a ruthless 6-1, 6-2, 6-4 win over Russia’s Rublev in Melbourne.

The fourth seed, who again had his left thigh strapped, will play American Tommy Paul in the last four on Friday.

Paul ended Ben Shelton’s surprise run to reach a first major semi-final.
Paul won 7-6, 6-3, 5-7, 6-4 against 20-year-old Shelton at Rod Laver Arena.

Greek third seed Stefanos Tsitsipas will meet Russian Karen Khachanov in Friday’s other semi-final.