Richmond forward Tom Lynch has been sidelined with a knee injury.
The 28-year-old is set for arthroscopic surgery on his right knee. There is no return date set yet with Richmond revealing in a statement the injury would keep Lynch out for the foreseeable future
"Richmond key forward Tom Lynch will be sidelined for the medium term with a knee injury," the statement reads.
"Scans this week revealed Lynch had torn cartilage in his right knee that would require an arthroscope to repair.
"The 28-year-old will have the procedure this week."
Lynch's absence is a blow for the Tigers with their top-four hopes hanging by a thread.
They have battled injuries all season with experienced players missing regular football.
In positive news the Tigers could be boosted by a trio of returns with Trent Cotchin, Shai Bolton and Dion Prestia all listed as "probable" by the Tigers.
Shane Edwards still remains at least a week away however.
There have been calls for the Tigers to introduce Callum Coleman-Jones into the senior side with him booting nine goals in two games at VFL level.
Kane Lambert remains 3-5 weeks away from a return. The Tigers take on Adelaide on Sunday afternoon at the MCG.