Jason Krejza & all-rounder Shane Watson have been recalled

Injured spinner Jason Krejza and all-rounder Shane Watson have been recalled to Australia's 12-man squad for next week's first Test against South Africa in Perth.

Off-spinner Krejza has been selected subject to fitness after missing the second Test win over New Zealand in Adelaide due to an ankle injury.

The 25-year-old hasn't played a Test since taking 12 wickets on debut in the final Test loss to India in Nagpur last month after also being edged out by Watson in the opening match of the NZ series in Brisbane.

Krejza replaces Nathan Hauritz for the Test at the WACA, starting December 17, while Watson has been included after Victorian paceman Peter Siddle, 12th man in Adelaide, was left out.

Krejza is due to play a one-dayer for Tasmania against South Australia in Adelaide on Wednesday.