COLLINGWOOD spearhead Travis Cloke has been substituted out of the big clash with West Coast at Etihad Stadium.

Cloke left the field midway through the first term and looked dejected as he went straight up the race for treatment to a suspected calf injury.

The Pies' left-footer didn't return and soon substitute Jarryd Blair entered the fray to kick Collingwood's first goal.

The Magpies are now without their two highest goalkickers this season, with small forward Jamie Elliott sidelined during the week with a back complaint.

Collingwood subsequently tweeted that Cloke had sustained a 'calf tweak' and had been subbed as a precaution, although the severity of the injury was 'unclear'.