West Coast coach Adam Simpson has labelled the decision to scrap the Ross Glendinning Medal for Sunday’s Western Derby blockbuster as “disappointing”.

Fremantle this afternoon announced the medal and the winning team trophy won’t be part of the usual derby post-match presentation, due to a change in the sponsorship agreement with Carlton United Breweries.

The medal has been awarded to the best player on the ground in derbies since 2001.

West Coast will instead award their own medal to their team’s best player - not the game’s best-on-ground - after the game.

Sunday’s derby is a Fremantle home game.

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“I suppose it’s Freo’s prerogative - now that CUB aren’t the game-day sponsor, they can do what they want,” Simpson told Seven News Perth.

“Look, it’s a little bit disappointing from our end, (and for) Ross, with the heritage and the WA football legend status he carries.

“We’ll do that internally, I think. We’ll still have a medal - it will just be to a West Coast player.”

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Camera Icon Eagles coach Adam Simpson with the Western Derby trophy in 2016. Credit: Danella Bevis

It came as Dockers legend and four-time medal winner Paul Hasleby slammed the decision on 6PR.

“The medal is owned by WA football. It’s owned by the fans,” he told 6PR.

“It’s been a big part of my career. There’s no doubt about that. I’m not a premiership player but I was lucky enough to have that accolade bestowed upon me throughout my career.

“It just stinks that this has been changed due to what is a commercial decision. You do not need a sponsorship agreement to give the Ross Glendinning Medal. I cannot understand the decision making made by the Fremantle Dockers.”