Tony McCoy's quest to reach 4,000 winners over jumps is highly unlikely to be achieved at Chepstow today after one of his two mounts was declared a non-runner.
The 18-times champion jockey needs two more victories to reach the magic milestone, but Mission Complete was taken out of the NFU Mutual Supports RABI Handicap Hurdle due to the soft ground.
McCoy's only ride at Chepstow, El Macca, runs in the opening RABI Gateway Project Maiden Hurdle at 1.10pm.
Unless the rider gets another ride on the card, McCoy must wait until Thursday before he can attempt to bring up the landmark.
McCoy will now head to Towcester, where he has two booked rides for trainer Jonjo O'Neill, on Thursday.
The 39-year-old gets the leg-up aboard Church Field in the Agetur UK Handicap Hurdle (2.10) and Mountain Tunes in the Weatherbys Novices' Hurdle (3.10).
Church Field, owned by JP McManus, won four consecutive races this summer, but has been unplaced on his last two outings at Newton Abbot and at Cheltenham.
Mountain Tunes, an Irish point-to-point winner in March, is also owned by McManus and will be making his British debut on his first start for O'Neill.