Jay L. Clendenin / Los Angeles Times
Kyle Layton, from Glendora High School, is congratulated after a hitting a home run. Players say McMasters, a burly man with a boyish face, is the glue that holds this fraternity together. "Hes the greatest," said Tim Smoley, 19, a Rio Hondo College player who spent five summers as an Astro. "Hes all about the kids."