Anchor: The London Olympics have been tainted by controversial judges' rulings from the start of the games, and South Korean athletes have been the victims several times. Our Kim Soyon tells us more.

Report: The elimination of Korean fencer Shin A-lam in the Monday semifinals of the women’s individual épée event enraged Korean fans and also drew criticism from international media. Her unfair loss has even been named as one of the five most controversial rulings in Olympic history.

In the match at the ExCeL Arena, Shin and Britta Heidemann of Germany ended regulation tied at 5-5. In extra time, Shin fended off Heidemann's attack three times with just one second remaining, but the clock apparently froze during that second allowing Heidemann time to score a winning hit.

If the extra period had ended in a draw, Shin could have advanced to the final with an advantage she earned during regulation time. Korean coaches protested immediately, saying the clock stopped running with one second remaining and the German's last hit came after the final second was up. But the judges did not accept the protest.

Spectators also booed the outcome and major news media around the world blasted the decision in unrelenting terms such as an absurd ruling, a big scar in the Olympics and even as the most controversial event in sports history.

Korean swimmer Park Tae-hwan was anticipated to win a gold medal in the men’s 400-meter freestyle but was initially disqualified. The ruling was later overturned and he ended up winning a silver. In judo, referees initially awarded Cho Jun-ho the win over a Japanese rival, but this was later overturned.

Koreans at home are enraged and frustrated over these judging disputes with some even calling for an Olympic boycott.

Kim Soyon, KBS World Radio News.