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, 35, cut a frustrated figure at times but channelled 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, 25, ended Ben Shelton's surprise run to reach a first major semi-final.
World number 35 Paul won 7-6 (8-6) 6-3 5-7 6-4 against 20-year-old compatriot Shelton on Rod Laver Arena.