Collingwood have confirmed Mason Cox has been ruled out of Round 3 with injury, with no clear timeline on his return to the field.

The Magpie suffered what was thought to be a bruised rib after Round 2's win over Port Adelaide, but scans revealed the 32-year-old had actually suffered a hematoma.

A hematoma, which appears like a bruise, is caused by damage to the blood vessels causing a collection of blood to leak out.

Collingwood's General Manager of football Graham Wright confirmed Cox's injury, stating that a timeline for the Pie's return would be assessed after further scans.

โ€œMason experienced soreness in his rib area after the game last weekend,โ€ Wright said.

โ€œHis injury was initially believed to be a bruised rib, however, after further investigation scans revealed a hematoma in that region.

โ€œMason's health is our priority here โ€“ he will now undertake further scans before we determine a timeline for his return.โ€

Cox played 18 games last season, his highest total since 2018, and has featured in both of Collingwood's matches so far in 2023, averaging nine disposals.