Brittni Hamilton of Webster, N.Y., earned the silver medal in girls singles Sunday in the opening event at the 2010 World Tenpin Bowling Association World Youth Championships, the United States Bowling Congress reported. Hamilton, a three-time Junior Team USA member, lost in the gold-medal match to Korea's Yeon-Ju Kim, 192-155, according to a USBC news release. Hamilton's silver-medal finish was the...