Olympic tennis is a knockout competition-one loss and you're out.

奥运会网球赛采用的是淘汰制，输一轮就彻底被淘汰。

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Le Page used arm-locks to great effect winning five out of his six fights with them in the knockout competition and won the final in under ten seconds.

BBC: Le Page wins British Open title

The other reason the league is pre-eminent is that folks have cottoned on to the fact that luck plays a huge part in the FA Cup, like any knockout competition.

WSJ: Success in Soccer's FA Cup Puts Wigan Athletic in Bind

In the English FA Cup , arguably the most famous domestic knockout competition in world club football, Premier League giant Liverpool was given a scare by fifth tier side Mansfield.

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