Barrry Geraghty is to ride Grand National favourite Big Fella Thanks.
Trainer Paul Nicholls revealed that Geraghty, who rode the horse to victory on his latest start at Newbury, would now be on board the Harry Findlay part-owned gelding after Ruby Walsh was taken to hospital with a suspected broken left arm.
Geraghty's orginal mount ,Tricky Trickster, will be partnered by Richard Johnson.
