A slice of the future of bowling will be on display starting Sunday in Puerto Rico as the 2013 Pan American Bowling Confederation Youth Championships begin. There will be medal competition in singles on Sunday, doubles on Monday, trios on Tuesday, team on Wednesday and Thursday, all-events and match-play Masters on Friday, the United States Bowling Congress reported in this news release. Junior Team USA features a high-powered boys team of Kamron Doyle of Brentwood, Tenn., Matthew Farber of...