sentences:  The final "PBT" broadcast aired on June 21, 1997 at the St. Clair Classic in Fairview Heights, Ill. that was won by Walter Ray Williams Jr.It was a very emotional broadcast in which Williams Jr. and Pete Weber, the game's two giants at the time, battled it out until the very end.It essentially marked the end of an era of bowling on network television due to declining ratings, although CBS aired a few events during the 1998 and 1999 seasons.