The 1991 Nu-Line X-Calibur launched bowling’s reactive-resin revolution. It stayed legal while rulemakers later targeted urethane instead: the wrong ball.
To feel how strange that is, go back to 1982. Glenn Allison, a PBA Hall of Famer, bowled three straight perfect games at a California center, the first 900 series ever rolled in sanctioned play. The American Bowling Congress sent inspectors, ruled the lane conditions too generous, and refused to certify it. The greatest score in the sport’s history went into the book as an asterisk, and the first six 900 series ever reported were all rejected the same way. That was an organization that believed a score had to be earned on an honest surface or it was worth nothing, no matter whose name was on it.
Less than a decade later reactive resin arrived, and everything the ABC rejected Allison for began happening permanently, on a national scale, because of the ball itself. Perfect games went from a few hundred a year in the 1960s and 70s to tens of thousands every year, with commemorative 300 rings shipping by the tens of thousands annually. In 1997 a college bowler named Jeremy Sonnenfeld rolled a 900 in Lincoln, Nebraska, and this time the sport certified it, the first of roughly forty sanctioned 900 series since. The standard did not bend. It broke completely.