Richmond has added six players to its extended squad for Sunday's Gather Round clash with St Kilda at Norwood Oval, headlined by two important Tigers and a potential debutant.

SCROLL DOWN FOR THE FULL RICHMOND ROUND 4 SQUAD >>

The team is on track to regain the services of superstar Dustin Martin, who missed Round 3 due to calf soreness, and hard-tacking midfielder Jack Graham, who was unavailable for the opening four rounds of the season due to a quad injury.

Richmond has also named yet-to-debut draftee Kane McAuliffe in the squad, following his back-to-back best on ground performances in the opening two rounds of the VFL season. 

"He’s in great form," Richmond VFL coach Steve Morris said of the first-year midfielder.

"(He) had another really good day at the office... A game-high eight tackles and consistently won the footy for us on the day."

Recruits Sam Naismith and Jacob Koschitzke are also a chance to be recalled for their second senior outings for Richmond, alongside young defender Hugo Ralphsmith for his first AFL appearance of the year.

Naismith kicked two goals in the VFL Tigers' Round 2 win over Sydney, while also collecting 19 touches, 17 hit-outs and eight marks.

"Another dominant performance by Sam. He kicked a couple of really important goals for us and I thought his contest and leadership around the ground was paramount," Morris said.

Koschitzke racked up 12 disposals and seven marks, while Ralphsmith recorded nine disposals at 89% efficiency and kicked a goal playing in one half.

Out of the Gather Round squad are Tom Lynch and Noah Balta due to injury, and Liam Baker, due to a one-match suspension.

Richmond will confirm its final Gather Round team on Friday night at 5.00pm AEDT.

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

Sunday's game will be broadcast live on Channel 7, FOX FOOTY and Kayo Sports. 

Round 4, Richmond v St Kilda, Sunday, April 7, 3.20pm AEST (2.50pm local time), Norwood Oval (Swipe across on mobile)

In: Dustin Martin, Hugo Ralphsmith, Jacob Koschitzke, Sam Naismith, Kane McAuliffe, Jack Graham
Out: Liam Baker (suspension), Tom Lynch (injured), Noah Balta (injured)