Scans have revealed Richmond forward, Jack Riewoldt has a small un-displaced fracture of his radius, and ruptured a ligament in his wrist in last night’s match against Collingwood.

Riewoldt is expected to be unavailable for selection for approximately four weeks.

The spearhead forward sustained the injury after landing awkwardly in a marking contest, in the second quarter of the match.

Riewoldt won’t require surgery, but will wear a splint for approximately two weeks to immobilise his wrist.

“While we’re disappointed that Jack will be unavailable for a period of time, we’re fortunate that his injury wasn’t more severe,” Richmond General Manager - Football, Neil Balme said.

"It's obviously sore," Riewoldt told reporters on Friday morning after scans, before going on to Epworth Hospital for consultation.

"I had a chat to (Collingwood defender) Lynden Dunn while I was in there, so I could be in a much worse position. There's obviously guys at the moment that are struggling with major knee injuries, but it is what it is."