Star halfback Will Genia provided some much-needed good news for the Wallabies when he got through their first training session in chilly Christchurch.

Genia has been in doubt for Saturday's Tri-Nations and Bledisloe Cup Test against the All Blacks after picking up a knee injury in the 49-28 loss to the New Zealanders in Melbourne last Saturday.

Winger Cameron Shepherd - who was drafted into the squad as backline cover for injured centre Rob Horne - missed training with the flu.

The Wallabies won't name their team until Thursday.

Meanwhile, All Blacks coach Graham Henry made only one injury-enforced changed to his starting 15 for Saturday's clash.

As expected, halfback Jimmy Cowan has been ruled out because of a rib injury which forced him from the field in Melbourne.

Piri Weepu has been promoted from the reserves bench to start with Weepu's uncapped Wellington teammate Alby Mathewson providing backup from the bench.

On the bench Auckland midfield back Benson Stanley replaces Israel Dagg.

All Blacks centre Ma'a Nonu, who made his debut as a 21-year-old against England in 2003, will reach a special milestone on Saturday in what will be his 50th Test. Prop Tony Woodcock is due for his 67th Test, becoming the most-capped prop in All Blacks history.

The All Blacks are unbeaten after three Tri-Nations Tests following two wins over 2009 champions South Africa and last Saturday's success over Australia in Melbourne.

All Blacks team: Mils Muliaina, Cory Jane, Conrad Smith, Ma'a Nonu, Joe Rokocoko, Dan Carter, Piri Weepu, Kieran Read, Richie McCaw (captain), Jerome Kaino, Tom Donnelly, Brad Thorn, Owen Franks, Keven Mealamu, Tony Woodcock.

Reserves: Corey Flynn, Ben Franks, Sam Whitelock, Victor Vito, Alby Mathewson, Aaron Cruden, Benson Stanley.

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