Andrew Koff, the best young teenbowler I've seen since Norm Duke and Pete Weberin the early 1980s, is among the big names who made it through tothe semifinals of the United States Bowling Congress Junior GoldChampionships in Indianapolis.Koff of Miami, was in 16thstarting Wednesday, and shot a 1,384 six-game block tolead the morning squad at Woodland Bowl and totaled3,899.Koff has cashed in numerous PBAevents, including the U.S. Open and a...