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Richmond midfielder Dion Prestia and young key forwards Samson Ryan and Jacob Bauer are in the mix to return for the Tigers this Sunday.

Prestia (calf), Ryan (ankle) and Bauer (ribs) will need to get through main training on Thursday in order to prove their fitness and be in consideration for Sunday's AFL and VFL fixtures.

Dustin Martin (back) also remains a test for Richmond's Round 18 match against GWS.

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Tom Lynch is currently two-to-three weeks away as he continues to recover from a hamstring injury suffered in Round 14.

Maurice Rioli (ankle) and Marlion Pickett (calf) are tracking towards returning in the next one-to-two weeks.

Richmond Injury List:

Test

Samson Ryan, ankle

Dion Prestia, calf

Jacob Bauer, ribs

Dustin Martin, back

Unavailable

Marlion Pickett, calf (1-2 weeks)

Maurice Rioli, ankle (1-2 weeks)

Tom Lynch, hamstring (2-3 weeks)

Jack Ross, foot (3-4 weeks)

Liam Fawcett, back (4-5 weeks)

Campbell Gray, hamstring (7-8 weeks)

Mate Colina, back (TBA)

Dylan Grimes, back (season)

Mykelti Lefau, knee, (season)

Tylar Young, knee, (season)

Sam Naismith, knee (season)

Josh Gibcus, knee (season)

Judson Clarke, knee (season)