Cheetham’s version of a crystal ball was an Excel spreadsheet. The spreadsheet contained a matrix of distances, launch angles and speeds. Cheetham, the U.S. Olympic and Paralympic Committee’s director of sport technology, created it using radar tracking systems from TrackMan and FlightScope. The high-tech devices professional golfers employed to hone their swings, it turned out, could make an impact on a sport that has been contested, in some form, since one cave man challenged another to a rock-throwing contest.