The third annual USA Bowling National Championships presented by Sixlets starts Wednesday in the Dallas area with 30 USA Bowling Regional champions — 14 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 finals, the United States Bowling Congress reported in this news release. Competition starts Wednesday at 5 p.m....