Fred Carrillo and Daniel Cassella's Bordonaro, the West Coast's top hope for the $2 million TVG Breeders' Cup Sprint (gr. I), worked a half-mile in :48 4/5 at Churchill Downs Sunday, Oct. 29.The work was sixth best of 64 at the distance on a sunny morning in which a dozen Breeders' Cup pre-entrants went to the track in preparation for next Saturday's championship day races.Trainer Bill Spawr said he was pleased with the work, noting the 5-year-old gelded son of Memo was "blowing a little bit, but not too much" when he came off the track."Everything is going well," Spawr said. Bred in California by his owners, Bordonaro has won nine of 12 starts going into the Breeders' Cup, with career earnings of $642,164.In his latest start, the gelding won the Ancient Title Breeders' Cup (gr. I) in a time of 1:07 4/5 for six furlongs.