Richmond has added five players to its extended squad for Sunday afternoon's clash with St Kilda at Marvel Stadium, headlined by Dustin Martin and Dylan Grimes.

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Star midfielder Martin missed last Friday night's clash with soreness, while co-captain Grimes was a late out due to a neck injury. 

After strong performances in the VFL last weekend, Hugo Ralphsmith (15 disposals, seven marks, one goal), Thomson Dow (24 disposals, seven clearances, seven inside-50s), Samson Ryan (six disposals, 18 hit-outs, two goals) have all been named in the 26-man squad. 

Out of the side is Jacob Hopper, who was concussed in last Friday night's loss to the Bulldogs, and Noah Cumberland, who suffered a concussion late in Thursday's training session and now has entered the protocols.

Trent Cotchin, who announced his retirement on Thursday morning, is battling calf soreness and will sit out the match, but is hoping to be available for the Tigers' final two games against North Melbourne and the Power.

Richmond will confirm its final team on Friday at 5.00pm AEST.

The Club will then name its substitute 60 minutes prior to the first bounce on Sunday.

The game will be broadcast live on Channel 7, FOX FOOTY and Kayo Sports. 

Round 22 Squad, Richmond v St Kilda, Sunday, August 13, 3.20pm AEST, Marvel Stadium (Swipe across on mobile)

In: Dylan Grimes, Dustin Martin, Hugo Ralphsmith, Thomson Dow, Samson Ryan
Out: Jacob Hopper (concussion), Noah Cumberland (concussion)