Richmond has regained the services of two premiership players for Thursday night’s blockbuster clash with Sydney at Etihad Stadium.

Key midfielder Dion Prestia and reliable tall defender David Astbury return to the line-up after being sidelined with injury.

Get all the game day information for Thursday night's match against Sydney

Prestia has been out of action with a calf complaint since the Tigers’ Round 7 victory over Fremantle at the MCG, but Richmond coach Damien Hardwick is confident he’ll be ready to go against the Swans.

“He's had a really good, solid training block . . . He's such a vital player to the way we play and we can't wait to have him back,” Hardwick said.

Astbury has fully recovered from the minor ankle injury that forced him to miss the team’s Round 13 win against Geelong.

See the Sydney Swans' team for Thursday night's Round 15 clash 

Prestia and Astbury replace Kamdyn McIntosh and Ryan Garthwaite, who have both been omitted.

The Tigers’ four emergencies for tomorrow night’s match against Sydney are McIntosh, Ivan Soldo, Corey Ellis and Callum Moore.