A journalist at Wimbledon asked Tomas Berdych how it felt to win his match after he'd actually lost it.
The incredible blunder came after Berdych - ranked sixth in the world - lost in straight sets to Frenchman Gilles Simon 6-3, 6-3, 6-2.
The red faced reporter apologised when Berdych thought it was a joke and another colleague had to quickly change the subject.
It's the first time Simon has reached the quarter-finals at Wimbledon and he will now face Roger Federer.