Cheltenham double for Nina Carberry

Knock House (9/2 joint-favourite) defied top weight to give Carberry a double in the Cheltenham Club Amateur Riders' Handicap Chase.

Mick Channon's charge jumped into the lead at the last and though long-time leader Foxbridge rallied on the run-in, Knock House would not be denied.

The winning margin was down to a neck at the line, with Alternatif five lengths back in third.

Channon said: "Nina gave him a great ride and Hen (Henrietta Knight, former trainer) has done all the schooling.

"He's always been a nice little horse and Tim (Radford, owner) wanted to come to Cheltenham because he's got a box in the new stand, so it's great to find him a winner.

"Three-mile-one is about as far as he wants to go at the moment.

"We were worried about the trip up the hill here."