THE AFL umpires department has conceded it failed to pay a crucial 50-metre penalty to St Kilda in the dying minutes of the Saints' draw with Geelong on Saturday night.

With just over a minute left on the clock and St Kilda one-point down, a 50-metre penalty should have been awarded to Saint Maverick Weller after Geelong’s Corey Gregson encroached unfairly on the mark.

Had an umpire paid the infringement, Weller would have lined up for goal on a slight angle and just 10 metres out.

"Unfortunately (that's) incorrect by the umpire," umpire Brett Rosebury told AFL.com.au's Whistleblowers program

"You can clearly see Gregson is not in the marking contest, so he's not entitled to run over the mark.

"In that scenario it should be a straight 50 metre penalty with no warning."

Fellow panel member and St Kilda legend Lenny Hayes agreed his old club was hard done by.

"Not happy at all, it cost the Saints the game," Hayes joked.

"(It's) disappointing, especially in the pivotal moment."

Rosebury was involved in some controversy of his own on the weekend, as he was the umpire who reported Brownlow Medal favourite Nate Fyfe for his clumsy tackle on North Melbourne's Ben Jacobs.

However, the six-time Grand Final whistleblower is content the Docker dynamo is still eligible to take home the game's highest individual award.

"And looking at that, I'm more than comfortable that hasn't gone any further and a free kick is more than worthy," said Rosebury.

"Every time we do make a report it's just a referral to the Match Review Panel.

"Players came in to remonstrate and as soon as I said a report had been laid, they all separated and we were able to get on with the game."

And Hayes dismissed suggestions Fyfe was found not guilty by the MRP due to his Brownlow favouritism.

"No, I don't (think so)," said Hayes.

 "I think if you go down that path you're questioning the integrity of guys like Luke Ball, Brad Sewell and Michael Christian.

"I think the MRP got it right."