David Florence saw his hopes of sealing a third Olympic canoeing medal sunk after a disastrous final performance at the Whitewater Stadium in Deodoro on Tuesday.
Florence, the reigning C1 world champion, never recovered from an early mistake and admitted he got the middle section "pretty catastrophically wrong" as he finished 10th and last in the final, 14.83 seconds behind gold medallist Denis Gargaud Chanut of France.
It was the second major disappointment for the 34-year-old, who missed out on a place in the C1 final at London 2012, although he later recovered to win C2 silver alongside Richard Hounslow four years ago.
And the internet felt his pain:
But Florence insisted he would not be affected by his disappointing performance.
He said: "I am used to competing in both events and I am more used to disappointment than success. I have done it before and I will have no problems giving it my all in the C2.
"It's disappointing because you don't get to the Olympics very often. London was very disappointing and today was very disappointing. Hopefully it won't be as disappointing in a few days, but who knows?
"Gates eight, nine and 10 went pretty catastrophically wrong. I tried desperately to get back in but I couldn't manage it."