The Wallabies have received a big boost ahead of their Rugby Championship rematch against Argentina in Sydney, with fly half Tom Lynagh cleared of concussion.

There was confusion over the young playmaker following Australia's last-gasp victory over the Pumas in Townsville, where Lynagh was replaced by James O'Connor.

The veteran piloted the home side to a 28-24 comeback win, with the match-winning try coming six minutes after the full-time siren.

Wallabies snatch thrilling victory with try six minutes after full-time Photo shows Angus Bell of the Wallabies celebrates scoring a try with Brandon Paenga-Amosa

The Wallabies turned down three chances to take a draw after full-time, before scoring a match-winning try to down Argentina in Townsville.

Lynagh left the field in the second ha

See Full Page