Last year's French Champion Hurdle hero has filled the runner-up spot in the Coral Hurdle and the Long Walk at Ascot so far this season and is set for his first appearance over fences in over a year.
Daryl Jacob has partnered the Nicky Henderson-trained L'Ami Serge on 13 of his last 15 starts, but with the owners' retained rider heading to Cheltenham on Saturday to team up with Gold Cup contender Bristol De Mai in the Betbright Trial Cotswold Chase, among others, connections have called on dual Irish champion jockey Russell.
Anthony Bromley, racing manager for Simon Munir and Isaac Souede, said: "Davy Russell will ride L'Ami Serge at Doncaster on Saturday. We feel it's a good fit.
"Daryl was initially thinking of going to Doncaster, but we thought about it and Bristol De Mai is our highest-rated horse and he runs at Cheltenham.
"Daryl knows Bristol De Mai well, so we felt it was important he rode him. This is what happens on Saturdays and I'm sure there'll be more clashes in the coming weeks."
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