Team Europe's assault on the Breeders' Cup gathered momentum as 11 members were safely installed in the quarantine barn at Churchill Downs last night.
Having arrived fit and well, five Sullee Lexington horse vans transported the horses from Louisville International Airport to the track.
Godolphin's Breeders' Cup Mile challengers Echo Of Light and Librettist arrived first at around 4pm in company with Silca's Sister, who is set to tackle the Grade Three Cardinal Handicap on Sunday.
Almost two and a half hours later, the vans carrying Ouija Board, Hurricane Run, Araafa, David Junior, Red Rocks, Rob Roy, Satwa Queen, Sleeping Indian and Satulagi all arrived at Longfield Avenue and pulled into Gate 10 before their cargo stepped directly into quarantine.
Nick Clarke, of the International Racing Bureau, said: "All the horses had blood samples taken at the airport, which were sent for testing at a special unit in Iowa.
"These should be cleared within 24 to 36 hours meaning that the European horses can then move into the neighbouring isolation barn and work on the track on Tuesday.
"Aidan O'Brien's five runners (George Washington, Scorpion, Ivan Denisovich, Aussie Rules and Ad Valorem) are scheduled to arrive on Tuesday, but in the past Aidan has left it until Friday to take them to the track."