Speaking to reporters on Thursday, Australian cricketer David Warner laughed off suggestions he was out of form leading into the Men's T20 World Cup.

"People talking about my form is quite funny," he quipped. "I laugh at the matter.

"I feel like I'm in a good space, I'm hitting the ball well in the nets, I couldn't be any more ready to go."

And it only took him 24 hours to validate those remarks.

Australia has claimed its second consecutive victory at the T20 tournament, and Warner was largely to thank for the triumph.

The 35-year-old silenced his doubters with an explosive knock of 65 off 42 balls against Sri Lanka at Dubai International Cricket Stadium that featured 10 boundaries.

Pressure was heating up on Warner after scoring a paltry 17 runs in his previous five T20 innings. He was recently dumped as captain of the Sunrisers Hyderabad before the IPL franchise dropped him from its starting XI altogether.

But Australian coach Justin Langer can breathe a sigh of relief knowing the veteran has rediscovered his mojo days before a mouth-watering clash with England.

Warner combined with Australian captain Aaron Finch for a crucial 70-run partnership that guided the Aussies towards a comfortable seven-wicket victory over the 2014 champions.

"It's nice when you get a couple in the middle of the bat early," Finch, who finished with 37 off just 23 deliveries, said after the win.