Tournament director Michalak says wherever it stared, the sport is now governed by the Professional Disc Golf Association, which includes countries like Finland, France, Germany, and Spain.

VOA: standard.2010.08.03

which is a knockout tournament which involves all professional clubs

这个是淘汰制的联赛，所有职业俱乐部都会参加。

关于足球联赛 - SpeakingMax英语口语达人