Sydney Stack will be unavailable for the medium-term after suffering a fractured cheekbone in Richmond VFL's game against Collingwood on Sunday at the Swinburne Centre. 

Meanwhile, midfielder Dion Prestia is likely to return this weekend against Gold Coast after his concussion in Round 15.

Richmond Injury List:

Probable

Dion Prestia – concussion

Unavailable

Noah Balta – hamstring (short-term)

Dustin Martin – hamstring (short-term)

Trent Cotchin – clavicle (short-term)

Sydney Stack – fractured cheekbone (medium-term)