Perth, Dec. 16 : Australia have included off-spinner Jason Krejza in their side and named pace-bowling all-rounder Shane Watson as 12th man for Wednesday''s first Test against South Africa at the WACA.

Australia captain Ricky Ponting said he expected the pitch to have some early life on day one for the quick bowlers but the home team would need some variety in their attack as the match wore on.

"Shane Watson will be 12th man meaning Krejza will play the game," Ponting told a press conference at the WACA.

"We think it''s going to be a pretty good wicket to bat on as the game goes on and someone who can take pace off the ball and do a good job with his finger spin will come in handy for us," the Sydney Morning Herald quoted him as saying further.

Krejza was overlooked for the first Test against New Zealand on a seaming Gabba pitch in Brisbane last month where Watson played.

Krejza had taken 12 wickets on debut in India last month. (ANI)