The Olympics always throws up moments of pure drama - often for the most unexpected of reasons.
Who would have thought that today the nation would be debating the merits of microchip technology versus televsion action replays following the controversial ruling against the GB curling team? And who could possibly have imagined how circumstances would conspire against Livingston speed skater Elise Christie in such a devastating way? The 27-year-old world champion has now crashed out of five Olympic events in a row over the course of four years, either literally crashing or being disqualified in controversial circumstances.
Elise will be able to look back at some of the races and identify places where she went wrong and things she would do differently if she had the chance to run them again. But, whichever way you look at it, it is a crushing series of setbacks for a young athlete to face. Given that she is a world champion and world record holder, it is impossible to feel anything other than she has had a terrible run of luck in the most high-profile events of them all.
Tomorrow, injury allowing, she hopes to make one more bid for glory. Whatever the result, I hope she leaves with her head held high.