Trainer Milton Harris has revealed his Grade One winner Knight Salute could be out for the rest of the season.
The four-year-old picked up te Jewson Anniversary 4-y-o Juvenile Hurdle at Aintree in the spring, originally dead-heating with Pied Piper before the stewards awarded him the race outright.
He was beaten by Pied Piper in a rematch at Cheltenham in October and was last seen finishing third to Knappers Hill in the Elite Hurdle at Wincanton.
Harris posted on Twitter on Friday: "We are very disappointed to have to announce our stable flag bearer/warrior Knight Salute has unfortunately met with a severe setback.
"He was having a tooth extracted and unfortunately injured himself getting up from the general anaesthetic, he will most likely miss the rest of the season.
"Our current priority is to make his life comfortable."