OLBG compared pre-season odds predictions with where teams actually finished in the league to calculate who over and under-performed.
Rovers had been predicted to finish 5th but could only manage 18th place.
The findings revealed that League Two play-off winning hopefuls Carlisle ended League Two 19 places above where they were expected to finish, making them the league’s biggest overachievers.
By contrast, in finishing 20th, Colchester were 18 places below pre-season predictions and take the crown as the league’s biggest underachievers.
Here’s how every team compared against their pre-season expectations with the bookies.
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. DONCASTER, ENGLAND - MARCH 25: Liam Ravenhill of Doncaster Rovers in action during the Sky Bet League Two between Doncaster Rovers and Northampton Town at Eco-Power Stadium on March 25, 2023 in Doncaster, England. (Photo by Pete Norton/Getty Images)
New research suggest Doncaster Rovers 13 places below par this season. Photo: Pete Norton
. Stockport County (+12)
Pre-season prediction: 16th Final position: 4th Photo: Naomi Baker
. Carlisle United (+19)
Pre-season prediction: 24th Final position: 5th Photo: Stu Forster
. Bradford City (+5)
Pre-season prediction: 11th Final position: 6th Photo: Chris Holloway
. Mansfield Town (-5)
Pre-season prediction: 3rd Final position: 8th Photo: Chris Holloway
3. Northampton Town (+3)
Pre-season prediction: 6th Final position: 3rd Photo: Pete Norton
4. Stockport County (+12)
Pre-season prediction: 16th Final position: 4th Photo: Naomi Baker