Richmond has made four changes to its line-up for Wednesday night's clash with the Western Bulldogs at Metricon Stadium.

The Tigers will welcome back skipper Trent Cotchin, who missed the last three games after suffering a hamstring injury in the Round 5 win over Melbourne.

Young gun Sydney Stack has earned a recall and will play through the midfield following a stint of hard work up on the Gold Coast.

"It took a little bit of time, but he's been outstanding up here and he's really taken to it and his training has been fantastic and he's been doing some work off-field as well," coach Damien Hardwick said of Stack on Tuesday morning.

Versatile runner Oleg Markov will return for his first senior game since Round 3, 2019, while fellow midfielder Jack Ross is back for his third AFL match of 2020.

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Stack, Markov and Ross all gained valuable match practice in a scratch match last Friday, teaming up with players from Melbourne and Essendon to take on Carlton.

Defender Nick Vlastuin will miss the clash, which would have been his 150th game, due to a minor calf complaint and will be assessed ahead of next Tuesday night's game against Brisbane.

Speaking on Richmond's Talking Tigers podcast on Tuesday, Vlastuin said he pulled up sore from training on Monday morning and was taking a cautious approach.

"I had a tight calf in the morning and tried to run it out but it got a little bit worse during the session. Had a quick scan yesterday and it was nothing too serious," he said.

"(But) with the two short breaks and already having a lot of injuries (in the side), we don't want to turn it into a couple-of-weeks thing."

Also out of Richmond's side are Patrick Naish, Daniel Rioli and Jack Graham, who have all been omitted.

The Tigers' four emergencies for the Bulldogs match are Naish, Rioli, Graham and Riley Collier-Dawkins.

The first bounce on Wednesday night at Metricon Stadium is set for 7.10pm AEST.

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Richmond's Round 9 team:

B Nathan Broad, Dylan Grimes, Noah Balta
HB Derek Eggmolesse-Smith, Liam Baker, Jayden Short
C Kamdyn McIntosh, Sydney Stack, Marlion Pickett
HF Kane Lambert, Jake Aarts, Jason Castagna
F Tom Lynch, Dustin Martin, Jack Riewoldt
Foll Ivan Soldo, Trent Cotchin, Shai Bolton
I/C Oleg Markov, Jack Higgins, Mabior Chol, Jack Ross
Emg Patrick Naish, Daniel Rioli, Riley Collier-Dawkins, Jack Graham

In: Jack Ross, Trent Cotchin, Oleg Markov, Sydney Stack

Out: Nick Vlastuin (calf), Patrick Naish (omitted), Daniel Rioli (omitted), Jack Graham (omitted)