If you wonder how big a deal it is to represent your country in the QubicaAMF World Cup, consider what Chris Barnes gave up to compete in the longest-running international singles tournament. As I reported in this blog, competing in the 50th World Cup starting Tuesday in Wroclaw, Poland, will prevent the PBA superstar from competing in the Japan Cup, another historical tournament that also counts as a PBA title and is one of the highest paying tournaments in the world. "The World Cup has a...