The 38-year-old suffered a nasty fall late in his quarter-final win on Wednesday.

Alcaraz dropped another set as he reached the last eight.

It is an intriguing showdown between the two bright young things who have won the last five grand slams between them.

The 37-year-old’s fitness had been in doubt ahead of his last-four clash with Alexander Zverev at the Australian Open.

The fifth seed recovered from two sets to one down to reach round two.

Sinner beat Daniil Medvedev in the quarter-final with a 6-2 1-6 6-1 6-4 win.

The match assures a home player in the men’s final since Andy Roddick lost to Roger Federer 18 years ago.

The two-time major winner dropped just four games against American Wolf.

The 22-year-old Italian followed up his victory over Novak Djokovic by claiming the trophy in dramatic fashion.

Djokovic had to save four set points on his serve to avoid falling 2-1 down to home favourite Alexei Popyrin on Rod Laver Arena.