Sure! Here’s a brief overview of WCT in exactly 100 words:

World Championship Tennis (WCT) was a professional tennis tour founded in the 1970s by promoter Jerry Diamond. It featured top male players and was noteworthy for introducing changes to tennis formats, including a unique scoring system. The WCT often held tournaments in a round-robin format, culminating in a prestigious finals event. It played a crucial role in popularizing tennis, especially in the United States. Notable players, including Jimmy Connors and John McEnroe, participated in WCT events. The tour eventually merged with the ATP Tour, helping shape the modern landscape of professional tennis we know today.