Sydney Swans coach John Longmire has provided updates on ailing duo Jake Lloyd and Chad Warner, following his side's Thursday night defeat to Richmond at the MCG.

The Tigers and Swans fought out an enthralling affair, with Richmond ultimately storming home in the second half, overcoming a Sydney side that came out of the blocks firing.

Richmond's victory, however, was blighted somewhat by co-captain Toby Nankervis' heavy bump on Sydney's Lloyd, who was quickly diagnosed with a concussion and subsequently ruled out of the contest in just the second quarter.

The incident places Nankervis in hot water with the MRO, as he is likely to be referred directly to the Tribunal as a result of his unsavoury act.

Longmire, too, appeared displeased with the incident as, when asked about Nankervis' influence on Thursday's game, was quick to point out his defender's lack of impact due to being removed from the contest because of the Richmond ruckman's bump.

"Yeah, I thought [Nankervis played] a big role," started Longmire post-game when addressing the media.

"Unfortunately, Jake Lloyd didn't have any role in the game, which was disappointing, but, yeah, he got on top in the ruck and really gave them momentum out of there."

Quizzed on Lloyd's condition, a frustrated-looking Longmire was abrupt, reminding of his defender's absence for next week's clash against the Western Bulldogs as well, due to the AFL's concussion protocols.

"Can't do anything about it, (we have to) suck it up," he said.

"We had to sub him out, so he missed tonight, [and he'll miss] next week, which is disappointing, really disappointing."

The 2012 premiership coach also provided an update on crucial midfielder Chad Warner, who missed Thursday night's defeat through an untimely calf injury.

"He won't be back next week, either," said Longmire.

"We're hoping that he'll be okay the week after. Unfortunately, it was a training incident that sort of set us back a bit."

Sydney hosts the Bulldogs at the SCG next Thursday night, before travelling to Western Australia to play Fremantle in Round 19.