Daryl Jacob will miss his ride on Intense Raffles in the Boylesports Irish Grand National on Easter Monday due to a broken collarbone.
Daryl Jacob suffered a broken collarbone when falling on the Henry Daly-trained Moon Hunter at Newbury on Friday and is aiming to be back in action for the Punchestown Festival.
Jacob said on SportingLife.com: "It was an unfortunate accident as Moon Hunter clipped heels with a horse in front of him coming down, taking his footing away from him, and I landed on my collarbone.
"It's fractured in two places, and I'll know more about recovery timelines when I see Geoff Graham, a specialist, next Wednesday.
"The timing is terrible as I was looking forward to riding Intense Raffles in the Irish National and then there's Aintree just around the corner.
"My motivation is to work hard and be back as soon as I can, hopefully for Punchestown, but I'll know more on that score next week."