Nico de Boinville looks set for a spell on the sidelines after suffering a broken collarbone following a heavy fall at Doncaster on Friday.

Nicky Henderson's stable jockey took a crashing fall at the second-last when partnering the 13/8 market leader Therapist in the La-Z-Boy At KC Sofa's Fillies' Juvenile Maiden Hurdle at Doncaster on Friday.

The jockey was stood down for the rest of the card and also forced to miss the ride on effortless winner Jeriko Du Reponet, who cemented his position at the top of the Supreme Novices' Hurdle, at Newbury on Saturday.

Speaking on his Unibet blog, he said: "Unfortunately, I took a crunching fall on Therapist at Doncaster on Friday, and I will be out for a while.

"I pretty much knew that it wasn't a routine departure soon after I hit the deck, and an X-ray this morning confirmed that I had broken my clavicle.

"It's obviously annoying, with so many of our good horses looking to prove themselves in better races at this time of the year, as at Newbury today, but it's only a small-scale setback in the grand scheme of things.

"I don't know exactly how long I will be out for at the moment, but I'll just have to get my head down and concentrate on the recovery.

"Others are in a far worse spot than me, so I won't be feeling sorry for myself."