Rodney Jenkins of Orange, Va., and Melanie Smith of Germantown, Tenn., the last two North American riders to qualify, won both World Cup events today.
Jenkins, 35, won for the second time in the World Cup when he rode Edie Spruance's Second Balcony to victory in the Seiko Speed Stakes.
Smith, 30, captured the first Grand Prix of the Carte Blanche World Cup series aboard Calypso, owned by Stillmeadow Farm.
Both riders were notified last week of an international ruling allowing them to ride because the host country can add two riders to its original list of eight.
In winning today, Smith posted the fastest time in a six-horse jumpoff over nine jumps. The original field of 28 had competed over the Olympic-type course twice. Her final time was 32.33.
"At first they treated me like I should be thankful to be here," said the red-haired Jenkins, who won on Third Man Thursday. "I didn't beg them to pick me. Melanie and I were ninth and 10th on the list."
Jenkins was the only rider in the field of 24 today to guide his horse, a 10-year-old bay gelding who is a former field hunter, to a faultless round. He cleared the 12 obstacles in 50.76 seconds.
"I was concentrating on going clean," Jenkins said. "I didn't want to take any chances like Nelson."
He was referring to Nelson Pessoa, the Brazilian who had taken a sharp turn between fences seven and eight on the course, nearly falling. His horse, Moet et Chandon Genet d'Or, then went clean until the last fence. The nine-year-old bay gelding knocked it down, adding six seconds to his time, and finished in 58.23 for second place.