Nicky Henderson is still at a loss to explain Might Bite's lacklustre effort in the King George VI Chase at Kempton.
The 2017 race winner was the last of seven finishers in the Boxing Day feature after posting a similarly disappointing effort when last of five in the Betfair Chase at Haydock on his seasonal bow in November.
Might Bite was reported to have bled following the Kempton race, but further tests have so far failed to produce an explanation for his below-par form so far this term.
Henderson said: "He is fine and I can't tell you any more as I don't know any more. He had an exercise on Monday and Toby (Lawes, assistant trainer) rode him out.
"We can't find anything and they (results) were all right. We are considering dozens of things as there is something not right, that is fair to say. Where we find it, goodness only knows.
"We are talking to lots of different experts on 10 different subjects."
GET THE FULL PICTURE: Don't miss out on FREE video replays and our fantastic My Stable tracker. Log in now and become a Sporting Life Insider.
Related horse racing links
