Serious Stable Gamble Detected: Rum Diamond Backed by 32.8pp at Fontwell
Market Form® has detected exceptional market support for Rum Diamond in the 2026-09-22 03:22:00 Fontwell.
The price has moved from 4.00 to 1.73. After accounting for declared non-runners, that represents a genuine move of +32.80 probability points. The alert was recorded at 17:51:08.
Why this move matters
A move of this size is far beyond ordinary market fluctuation. It means the market-implied chance attached to the runner has increased by more than 25 percentage points from its true opening position.
No measurable non-runner price effect has been included in the reported move.
Trainer market context
In the historical Market Form sample, Max Comley has had 3 runners supported by at least 20pp from opening price to SP. 2 won, a strike rate of 66.7%, for an SP return of +1.60 points. The stable’s like-for-like baseline strike rate is 9.0%.
Horse-specific evidence
Rum Diamond has previously been backed in 1 recorded races. The recorded finishing positions were 11th.
How to use this alert
This is evidence of exceptional market support, not a recommendation to back the horse blindly. Price, race conditions and the wider form picture should still be considered. Market Form identifies what the move means and removes the distortion caused by non-runners.