A minor hamstring injury is likely to sideline spinner Brad Hogg from Australia's second Twenty20 International against South Africa at Kingsmead in Durban on Wednesday.

The Australians will definitely be without all-rounder James Faulkner for the second in a three-match series. The talented Faulkner is nursing a knee injury. The first T20I in Port Elizabeth was washed out without a delivery bowled.

"It's a weird one. I can do everything except bowl," Hogg told AAP. "Every time I plant that front leg down, I can't get over there. But I'm glad it's happened now and not over in Bangladesh.

"If it was a big game - you'd take the medications and definitely would play. But I think we're taking a conservative approach at the moment so I'm right for the World Twenty20."

Hogg and Faulkner will be key to the WT20 campaign. The Aussies have been grouped with Pakistan, West Indies, India and a qualifying team. They will play their first tournament fixture against the Pakistanis at the Shere Bangla National Stadium in Mirpur on Sunday, 23 March.

"The plan's never really been for James to play any of the matches in South Africa," said team doctor Peter Brukner. "We don't want to rush him; he had significant surgery five weeks ago. He's a young guy. We don't want to jeopardise his long-term prospects, so we're taking him along very slowly."