World No. 5 Novak Djokovic won his 26th straight Australian Open title by beating Russia's Andrey Rublev.
The 21-time Grand Slam winner matched former world number one Andre Agassi's record. The record was set from 2000 to 2004. In his 27th match, Agassi lost to Marat Safin.
Djokovic will face American Tommy Paul in the semifinals.