The Pro Bowlers Association announced that it will offer a six-hour preview of the World Series of Bowling free on its Xtra Frame webcasting service on Tuesday at 8 p.m. Central time. The show will be the debut of Xtra Frame's HD service, which will be used for all live Xtra Frame coverage of the 2011-12 PBA Tour, PBA said in this news release. Xtra Frame is a great service I'm always wishing I had...