The showjumping was a heart-stopper. As the final riders were put through their paces, rails fell and positions changed, but the Kiwis did brilliantly.
Nicholson and his Spanish-bred chestnut Nereo - a horse not known for his showjumping prowess - picked up a single time fault in a very carefully ridden round, to finish on 41.4 penalty points and put all the pressure in the world on the two German superstars - defending Badminton champ Michael Jung aboard La Biosthetique Sam FBW who came into the showjumping in second place, just a smidgen behind Ingrid Klimke aboard Horseware Hale Bob Old who looked on track to become the first woman in a decade to take the title.
But it wasn't to be, with Jung adding four faults to finish in second place on 44 penalty points, and Klimke an uncharacteristic 21 to drop well out of contention.
"They're not machines," said Nicholson, as he waited on tenterhooks for the final riders to complete their rounds, "but he showed he (Nereo) can do it . . . at 17 years old."
They were hugely popular winners, with Nicholson and Nereo's owner Libby (Deborah) Sellar receiving a standing ovation when they came forward to receive the winner's trophy.
"It is an unbelievable feeling," said Nicholson. "To have waited so long, to be so near a few times . . . it is pretty hard but you just have to get over it and move on. I am lucky to be in a position to have that dream and come and put it in place."