Canada's Milos Raonic faces his toughest test of the Australian Open this evening when he meets top-seeded Novak Djokovic in the quarterfinals at Rod Laver Arena.
You can watch the match on TSN1, TSN3, TSN4, and TSN5 beginning at 3:30am et/12:30am pt. An encore presentation will air Wednesday at 1pm et/10am pt on TSN4 and TSN5.
Raonic, the eighth seed from Thornhill, Ont., won his first three matches in straight sets before being stretched to five sets in the fourth round by 12th-seeded Feliciano Lopez of Spain.
Djokovic, a four-time champion in Melbourne, has yet to drop a set so far in the tournament.
Raonic and Djokovic have met four times previously, with the world No. 1 winning each time. In their two most recent meetings last year, Djokovic beat Raonic in the French Open quarterfinals, and again in the final of the Masters Series Paris event in November.
The winner of the Djokovic-Raonic match in Melbourne will move on to the semifinals to face the winner of the match between Stan Wawrinka of Switzerland and Kei Nishikori of Japan.
TSN's full lineup of matches tonight from the Australian Open:
Madison Keys vs Venus Williams 
Not Before 8:30pm et
Serena Williams  vs Dominika Cibulkova 
Not Before 10:00pm et
Stan Wawrinka  vs Kei Nishikori 
Novak Djokovic  vs Milos Raonic