As Beijing prepares to wave goodbye to the Olympic circus on Sunday night, waiting to step into the void is another sports promoter. This one is brandishing the star-spangled banner and is ready to unleash on the Chinese capital the very best or worst in American entertainment, depending on taste.

Those who came to Beijing fearing a straightlaced, “no-fun” presentation of Olympic sports from the hosts may have been struck dumb by the sight of short-skirted cheerleaders and the sound of blaring pop music.