Following news that Geelong has promoted James Podsiadly to its senior list, online bookmaker Sportsbet.com.au has trimmed the 28-year-old’s price to win the Coleman Medal in his debut season from $81 to $51.

This follows earlier ‘speccing’ on Podsiadly where one punter had $1000 on the Cat forward to win the Coleman at the astronomical odds of $501 for a potential $500,000 pay day.

“We stand to lose half a million on Podsiadly in one bet, let alone tens of thousands more from punters who backed him at $81 before the announcement of his promotion,” said Sportsbet.com.au's Haydn Lane.

While Podsiadly is the bookie’s worst result, Lane said the biggest plunge had been saved for Western Bulldogs spearhead Barry Hall.

“Barry Hall has been the big firmer in Coleman Medal betting. You could get $17 about him in mid-February, now he’s the third favourite in betting at $6.50,” said Lane.

“Since the NAB Cup Grand Final, four out of every five bets we’ve taken on the Coleman have been on Big Bad Barry.”

Hawthorn’s Lance Franklin is favourite to take home the Coleman at $4, while Lions new recruit Brendan Fevola is the next best at $4.50.