Lewis Hamilton has been praised by his own Mercedes team boss as well as others in the pit-lane
In both of the Friday practice sessions, Lewis Hamilton finished top of the team-sheets to confirm his status as favourite for the 2017 F1 World Drivers' Championship.
And Mercedes team boss Toto Wolff believes his British driver is currently untouchable at the top of the sport.
"[Hamilton] is really in a league of his own at the moment," Wolff told Sky Sports.
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"The one-lap pace was really good, and the long runs [were] stable.
"He took the ultra-softs to, how many laps was it? 15, 16, 17, something like that.
Lewis Hamilton impressed in practice ahead of the Australian Grand Prix
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Lewis Hamilton is favourite to seal his fourth world title this year
"It was stable and I'm happy."
The morning session saw Hamilton and Valtteri Bottas close out a Mercedes 1-2 with Red Bull filling third and fourth place.
But the Milton Keynes team were beaten into fifth and sixth by Ferrari in the afternoon and team principal Christian Horner was pessimistic about his chances of getting onto the top step of the podium.
"I think being realistic the performance we've seen today from Lewis [shows] he's the absolutely favourite," Horner said.
"He was the favourite coming here and all today has done has underlined that.
"But it's motor racing and anything can happen, we've seen spurious results in opening Grands Prix in previous years.
"To have a home winner [in Daniel Ricciardo] would be an unbelievable result and I think looking at the pecking order that's a long shot."