You might not realize it, but this is a major accomplishment: Team USA’s Marshall Kent won the gold medal in boys’ singles at the 2012 World Tenpin Bowling Association World Youth Championships in Bangkok, Thailand, on Tuesday. The days when U.S. bowlers romped to medal after medal in international competition are long gone. Yes, Americans win plenty of medals, but many other countries have caught up and/or passed the U.S. Many of those countries treat bowling more as a sport and...