Richmond forward Jack Riewoldt is a certain starter for their Dreamtime at the ‘G clash with Essendon on Saturday night after overcoming concussion.

The dual Coleman medallist passed a concussion test on Thursday morning to get the green light to play.

Riewoldt was felled last round by a clumsy blow from Jake Carlisle, which resulted in the St Kilda defender being banned for two matches.

“He’s fine, he passed his concussion test this morning,” said Richmond coach Damien Hardwick.

While Riewoldt will lead the charge against the Bombers, backman Bachar Houli will sit out the annual AFL clash at the MCG with his groin injury.

“He’s a bit more longer term and is more likely after the bye, which is disappointing,” Hardwick said

In more mixed injury news, defender Dylan Grimes (back) will return while exciting young small forward Daniel Rioli will play another VFL game.

The 21-year-old hasn’t played senior football since badly breaking his left ankle in the last quarter of the Tigers’ grand final triumph over Adelaide.

“He (Daniel) probably needs more football,” Hardwick said.

“He’s such an important player to our footy club and the way he plays … he probably needs one more game at VFL level to make sure he gets through.

“He plays the game at such a high intensity we’d hate to put him in underdone, because the way he plays the game there’s a chance of re-injuring himself.”