Madden said she chose the other two: Simon, who finished sixth, and Cortes C, who finished eighth, because she thought those two were fitter than Vio Volo, who had been sidelined during the winter shows because of a skin disease.
Vio Volo, however, was the only horse to go clean in both observation events, so certainly should have made a good impression on the selectors - George Morris, chef d'equipe; Chris Kappler, an Olympic team gold medalist and individual silver medalist; Peter Leone; and Susie Hutchison.
Five horses had one rail down or a foot in the water jump for four faults, and they were divided on the time they took to complete the course.
McLain Ward, on Antares F, (four faults in 69.01) finished second after having won Thursday's Grand Prix.
Christine McCrea, on Romantovich Take One, (four in 69.68) was third. Course designer Michel Vaillancourt said the courses in the two observation events were intended to provide a road to London and the Summer Olympics.
"I praise these riders," said Vaillancourt. "I give them all the credit. The arena today did its job. The horses were able to do well because of the quality of the footing."
"The course was big and as technical as Thursday's," Jayne said. "The jumps came up quickly, and your horse needed stamina. I couldn't have asked more of my horse. I think he's world class."
"My horse jumped better today than he did on Thursday," said Ward, who felt it was rider error that led to his rail down. He said he hadn't thought that fence would be so difficult and had been concentrating on the coming triple bar leading into a triple combination.
Antares F was Open Jumper Champion with 24½ points, and Quointreau Un Prince, ridden by Laura Chapot and owned by Chapot and Ward, was Reserve Champion with 24 points.
Ward was Leading Open Jumper Rider with 45 points and, although there is no reserve Leading Rider, Chapot was his closest competitor with 30 points.