Tennis legend Roger Federer is into a second straight Hopman Cup final - and he's barely broken a sweat.
Federer has enjoyed another standout Hopman Cup campaign, winning all three of his singles clashes in straight sets to guide Switzerland into the decider.
The mixed-teams event has proven to be the perfect preparation for Federer in the past, with the 37-year-old winning the past two Australian Opens after appearing at the Hopman Cup.
Federer feels his game is in good shape yet again, but his three night matches at the Hopman Cup means he has missed out on playing in the Perth heat.
The Swiss maestro even felt a bit cool at times in his 7-6 7-6 win over world No.15 Stefanos Tsitsipas on Thursday night as the mercury dropped below 20 degrees.
Federer will fly out of Perth just before the city enters a hot spell.
And he'll also miss out on Melbourne's forecast 42-degree scorcher on Friday.
By the time Federer arrives in Melbourne late on Sunday, the city will be entering a cool patch of temperatures in the low-to-mid 20s.
Temperatures commonly exceed 30 degrees during the Australian Open, but Federer is confident he will be able to handle the heat when it comes.
"You can't go play tennis in a sauna," Federer joked when asked how he would prepare for the heat.
"It's just (about) being ready when the hot weather comes around, and just get through somehow.
"This is where my fitness and mental toughness will hopefully get me through."
Switzerland will play either Germany or Australia in the Hopman Cup final.
Germany's powerful pairing of world No.2 Angelique Kerber and world No.4 Alexander Zverev are favourites to reach the decider.
Federer and Belinda Bencic won the title for Switzerland last year, and the pair are eager to repeat their heroics.
Bencic pushed Serena Williams to three sets on Tuesday night, but she was beaten 6-3 6-4 by Greece's world No.41 Maria Sakkari on Thursday night.
