Correction: The headline on this story had the wrong starting day in an earlier version of the story.   The fourth annual USA Bowling National Championships presented by Sixlets starts Thursday in the Detroit area with 32 USA Bowling Regional champions — 16 teams in the 12-and-under division and 16 teams in the 15-and-under division — looking for the opportunity to advance through the double-elimination match-play bracket and onto CBS Sports Network for the televised...