Edward O'Grady is unsure who will take over in the saddle from the sidelined Mark Walsh aboard Kitten Rock in next week's Stan James Champion Hurdle at the Cheltenham Festival.

Walsh has steered the JP McManus-owned five-year-old to a hat-trick of victories this season, but is set for a spell on the sidelines after suffering a broken arm in a fall at Thurles last week.

Kitten Rock was a runaway winner of the Red Mills Trial Hurdle at Gowran Park last month, but will be a big outsider for the main event on the opening day.

O'Grady said: "The plan is to run and he seems in very good form. I'm happy with him and he's in good shape.

"I don't know (who will ride him), actually. No decision has been made."