Richmond have confirmed they will unveil debutants Ryhan Mansell and Will Martyn for their clash against Port Adelaide on Friday night.

Speaking to the media on Wednesday morning, Hardwick revealed that the club are preparing to blood some inexperienced talent in Round 4 given a recent injury plague at Punt Road, with the young duo now confirmed.

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With spots now opening up at Richmond, Martyn an exciting onballer and the defensive youngster Mansell will become the Tigers' first debutants of 2021.

Martyn was drafted to the Tigers with the 44th selection in 2019, while Mansell was picked up earlier this year via the Supplementary Selection Period.

Star midfielder Dion Prestia (hamstring) and defender Kamdyn McIntosh (concussion) were both sidelined following the Tigers' loss to Sydney last Saturday and won't be available for selection this week.

Prestia is likely to miss the next month, while McIntosh will undergo concussion protocols and is set to be sidelined for a minimum of 12 days.

The Tigers remain without defender Nick Vlastuin for a further 4-6 weeks, as he battles a knee injury.