The USBC Masters is a championship ten-pin bowling event conducted by the United States Bowling Congress. The Professional Bowlers Association (PBA) began recognizing it as a title event in 1998, and it was designated one of the four majors in 2000. A PBA rule change in 2008 retroactively awarded a PBA title (and a major) to any Masters winners prior to 1998 who were PBA members at the time of the victory.[1]