Top chaser Shishkin has been found to have a "pretty rare bone condition” after his shock Cheltenham defeat.
Nicky Henderson's star only got as far as the eighth fence in the Queen Mother Champion Chase before he was pulled up. Nico de Boinville called it a day on the 5-6 favourite, after he failed to travel with fluency on the rain-softened ground. Conditions were thought to have played their part, but now Henderson has found another reason for the no-show.
“Immediately the next day he was actually perfectly alright, then he was lame for a couple of days and then he was sound,” the Seven Barrows handler told Unibet. “We weren’t quite sure where he was. Initially we put it down to the ground, but I think in out heart of hearts we knew that even though it was atrocious ground, that that wasn’t the whole thing – there was something else that was bugging us.