Collingwood has overcome the loss of acting captain Anthony Rocca to score its third-straight AFL win, beating West Coast by 18 points.

The Magpies looked in big trouble early, but the midfield work of Scott Burns and a game-turning tag from Rhyce Shaw proved pivotal as they won 14.9 (93) to 11.9 (75).

Collingwood's Chris Tarrant was the best forward on the ground with four goals.

West Coast pulled to within 11 points late in the game and should have been a goal closer, except Phil Matera dropped a key mark midway through the final term in front of goal.

Tarrant kicked the last goal of the match to seal the win.

Collingwood suffered a major blow late in the first half when acting captain Anthony Rocca was stretchered from the field with a serious-looking ankle injury.

Rocca and opponent Quinten Lynch were running for the ball on the wing when the Eagle tackled him.

The key forward's right ankle was caught underneath him and he fell heavily.

Play was delayed for several minutes as Rocca was taken straight to the rooms.

The Magpies to that point had recovered from a mediocre first term and led by nine points at half-time.

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