Human: Why did Kenesaw Mountain Landis impose a lifetime ban on all eight players? Assistant: 
Kenesaw Mountain Landis imposed a lifetime ban on all eight players because he believed that they had thrown the 1919 World Series. He believed that they had thrown the game because they had sat in a conference with a bunch of crooked players and gamblers where the ways and means of throwing games were planned and discussed and did not promptly tell their club about it.