A timing error in the last second of a fencing semi-final led to a 20-minute sit-in while a controversial decision was made in the women's individual epeé. The semifinal was between South Korean Shin A Lam and German Britta Heidemann.
With one second remaining in the match, Heidemann needed to score a touch on Shin to win, but Shin would have advanced if they finished tied. The clock got stuck allowing Heidemann several extra seconds to score.
Here's the ending...
Officials awarded the win and a chance at the gold medal to Heidemann.
Shin sat down refusing to leave. Fencing rules say that if you leave the floor, you accept the decision of the officials. Officials eventually removed Shin from the fencing platform after 20 minutes as the appeal was denied.