The 18-time champion jockey was scheduled for three rides at the Bangor course in Wales, but all racing was abandoned due to a waterlogged track following an inspection at 6.30am, with meetings at Leicester and Redcar suffering the same fate.
Bangor clerk of the course Andrew Morris said: “We had 20mm of rain overnight. It didn’t come as early as originally forecast, but parts of the track are not fit for racing. There is more rain coming, so it would be a pointless exercise to continue.”
McCoy, who has ridden 3,889 winners, is booked for five rides today at Ffos Las racecourse in Carmarthenshire, Wales.
The Northern Irishman, named BBC Sports Personality of the Year in 2010, kicks off today on Gate Please at 1.30pm, finishing on Red Devils Lad at 4.30pm.
Last night’s scheduled Skrill Conference South fixture between struggling Boreham Wood and Maidenhead United also fell victim to the weather.
A statement on the club’s website confirmed: “Boreham Wood Football Club are sorry to announce that the fixture against Maidenhead United has been postponed due to a large falling tree in our car park, the damage to our astro pitch and the other consequential wind damage.
“Spectator and public safety is obviously paramount in our thoughts and we apologise for any inconvenience caused to both sets of supporters, players and officials.”
But the Championship fixture between Brighton and Watford went ahead as scheduled after “minor damage” to the Amex Stadium was repaired, though kick-off was delayed by 15 minutes due to traffic problems. The game finished 1-1.