On Friday, Swedish William Poromaa had the chance to climb the overall Tour de Ski.
The 22-year-old's closest competitors were already eliminated when it came time for his quarter-final.
But there was no advancement for Poromaa - who finished fourth in his heat.
Afterwards, he was also moved down to last place.
During the race, he stepped in front of the Frenchman Jules Chappaes, who fell dramatically.
- I looked back and thought it looked green.
But obviously not... We'll have to look into it, says Poromaa afterwards.
He was thus punished with a yellow card for the move.
- I didn't know that during the race.
I felt energized but didn't make it at the end.
But it was done anyway.
See the situation in the player above.