AFL umpires boss Dan Richardson conceded Jeremy Cameron should have been paid a mark in last night's two-point loss to Sydney.

The umpires deemed the ball did not travel 15 metres despite players believing Cameron took the mark with six seconds left in the game.

Had the mark been given, Cameron would have had a set shot from the pocket after the siren to win the game.

Speaking to the media on Sunday, Richardson conceded the umpires made the wrong call.

A disappointed Chris Scott said after the game that it was "clear" the ball travelled 15 metres.

“If Cameron had have had that shot, he’s the best person to have - the left-footer - from that spot, he rarely misses from there. [But] it’s unfair to cherry-pick the last couple of minutes without looking at the overall game,” a dejected Scott told reporters including The Age's Anthony Colangelo.

It is the second time this year the Cats have been involved in an umpiring scandal after the AFL admitted Brisbane should have had a free kick in front of goal after Zac Bailey was not paid holding the ball on Mark Blicavs.