Dominic Thiem succumbs to fatigue at Australian Open and Stan Wawrinka also out

Dominic Thiem became a high-profile casualty at the Australian Open on day four, with former champion Stan Wawrinka also crashing out.

Austrian Thiem retired hurt when two sets down to Australian teenager Alexi Popyrin.

Thiem need five sets to get through his first round match and called for the trainer citing general fatigue.

“It is never easy winning like this – Dominic played a tough first round,” Popyrin said.

“I always thought that I was in the match to be honest but when I won the second set is when that thought really kicked in and that I could actually win the match.”

Wawrinka, meanwhile, lost in an absolute epic to Milos Raonic.

The Canadian came out on top despite every one of the four sets going to a tiebreak.

After four hours, Raonic had battled a 6-7 (4-7), 7-6 (8-6), 7-6 (13-11), 7-6 (7-5) win.

Russian Daniil Medvedev is also safely through after overcoming Ryan Harrison 6-3, 6-3, 6-3.

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