Brendan Powell junior escaped serious injury after being taken to hospital following a crushing fall in the Mansfield Jobs today.co.uk Handicap Chase at Southwell.
The young rider, who only on Friday rode a winner for the Queen on the Flat at Newmarket, was knocked unconscious after coming to grief from The Lemonpie, trained by his father, Brendan senior.
Powell was taken by ambulance to the Queen's Medical Centre but was later released and tweeted: "Thanks for all your concerned tweets, a bit sore and a bit of a headache, but nothing broken!! £thankgod"
Racing was initially delayed for an hour while the ambulance returned to the track, but a further delay ensued when both ambulances encountered problems back at Southwell. The 2.40pm race eventually got off at just before 4.05pm.
On a dramatic afternoon at the Nottinghamshire track, Ian Popham made a fairytale return to the saddle after being sidelined for 10 months when he partnered Sky Calling to victory.
The 3lb claimer broke his pelvis in a fall when riding out for Caroline Keevil in September and was making his long-awaited comeback on the nine-year-old, trained by his boss Martin Keighley.
And it was a double celebration, as Sky Calling was Keighley's 100th winner as a trainer.
Popham had the 9-1 shot in the front rank all the way before going on at the third-last.
Robbie made smooth progress to challenge but fell at the final flight, giving Andrew Thornton a nasty tumble and leaving Sky Calling to come home four lengths clear of Lukey's Luck.
Condicote-based Keighley said: "That's our 100th winner and Ian Popham's first winner after being off for over 10 months, so it was special.
"It's fantastic and I'm delighted for him.
"Ian didn't look ring-rusty. He rode to orders, to sit third or fourth which he did and press on turning in. It's nice when it goes to plan."
Thornton was stood down for the rest of the day after sustaining a leg injury.
Clerk of the course Roderick Duncan said: "Andrew has been stood down. I've spoken to him and they don't believe his leg is broken.
"There is a possibly some ligament damage or something like that."