Nigel Lappin was the only wounded Lion not to test his fitness on Wednesday night in Brisbane's last Gabba training session before Saturday's AFL Grand Final.

Lappin is nursing a painful rib injury from Brisbane's preliminary final win over Sydney and is rated a 50-50 chance of playing against Collingwood.

The star midfielder was basically a spectator at training and gingerly made his way to the centre of the ground after the main group had started its session.

When a brief handball exchange went wrong, the All-Australian seemed extremely tentative as his movement to pick up the errant Sherrin was halted when a trainer stepped in and collected the ball for him.

Meanwhile, Marcus Ashcroft (knee), Chris Scott (groin), and Aaron Shattock (knee) all trained strongly to put their names forward for a recall.

At the end of the main session, the trio went through a series of sprints and agility drills and handled the tasks comfortably.

Defender Darryl White suffered a corked thigh in the preliminary final and was listed for a test but completed tonight's session easily.

Veterans, captain Michael Voss, grand final specialist Martin Pike, and full-forward Alastair Lynch trained separately from the main group and went through a series light drills in front of 2,000 Lions supporters.

Defender Justin Leppitsch said Brisbane coach Leigh Matthews would not be taking any risks at the selection table despite Lappin's importance to the team.

"Nigel's run is probably our best, and in the two or three best in the competition with his drive and his run, so that's how much we rate him and we want him out there," Leppitsch said.

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