The 54th QuibcaAMF World Cup starts Tuesday at Sam’s Town in Las Vegas with Kyle Troup and Shannon O’Keefe representing the U.S. Troup and O’Keefe earned their spots by winning the Team USA Trials in January. Bowlers from more than 80 countries will compete, and BowlTV will webcast the competition. USBC reported that the field will include a few past winners: Aumi Guerra of the Dominican Republic (2010, 2011), Osku Palermaa of Finland (2006) and Mel Oates of Wales (2000)....