Anna Merveldt has narrowly missed out on qualifying for the Grand Prix Special in the Olympic Dressage at Greenwich Park.
Thirty-two riders qualified for the Grand Prix Special from the 50 starters but Merveldt ended up 33rd.
Because of new team qualification rules, two riders with scores below her went through, together with the top 11 individuals.
However, Merveldt and Coryolano, being in 14th place in the individual classification, would need two riders above her to drop out before the Grand Prix Special on Tuesday.
Merveldt said: “It is heartbreaking to miss out so narrowly but I was proud of how we performed yesterday but the margins are so tight at this level.
“We were a little unfortunate that we had to do our warm up and test during a hail storm but in fairness the horse never faltered,” she said.