Irish trainer Arthur Moore reported Lyreen Wonder to be sore after the gelding came to grief at the 20th fence in Saturday's Martell Grand National at Aintree, Liverpool.
After the race the horse was taken to Leahurst Veterinary College in Liverpool for examination.
"His X-rays came up clean but he's quite sore," Moore said today. "He didn't actually fall he was unseated and I think he fell over some horse or horses. It was a bit freakish".
Lyreen Wonder was just beginning to make headway when unshipping Barry Cash. The Naas trainer said: "We were delighted with the way he was going. He was just sneaking into the race. But that's the way it goes."
Moore, who is hoping to aim Lyreen Wonder at next year's Grand National, had taken the Martell Melling Chase the previous afternoon with Native Upmanship.
Native Upmanship got the better of a high-class field in Friday's feature and Moore now intends sending the classy nine-year-old to the Punchestown Festival later this month.