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Adam Rifkin stashed this in There is no finish line.
Here is an article about it. His name is Alex Cujavante, a Colombian skater. This was in 2010 at the World Roller Speed Skating Championships. Apparently, he was going to lose the gold medal anyway, because he made a sprinting mistake that would have left him disqualified.
"Pride goeth before destruction, and an haughty spirit before a fall."