For some reason, athletes often get caught up in the heat of the moment and celebrate before actually accomplishing whatever feat they've set out to. We've seen it in college football(and the NFL, for that matter). Now we're seeing in cross-country skiing.
Emil Hegle Svendsen threw up his arms in celebration of a gold medal win at the Winter Olympics in Sochi - but as you're guessing, he hadn't quite won yet. Frenchman Martin Fourcade was right behind him and nearly extended one of his skis over the line before Svendsen could naturally glide across it. Svendsen wound up winning, but it couldn't have been by more than an inch.
Per Business Insider (you may need to click to see the GIF):
">February 18, 2014
Here's a photo, per USA Today Sports.
Needless to say, this would have been a tough one to swallow. You can bet he won't take things so lightly in the future.