The rapid growth and popularity continued as innovations like EYE2 irons, the L-Wedge and lightweight carry bags

proved favorites of golfers all over the world. The 80s are also remembered for the "square groove" controversy that found Karsten at odds with both the USGA and PGA Tour over the grooves in the best-selling EYE2 irons. After several years, the issue was resolved in a manner that was best for the game of golf and the company. PING putters dominated the major championships by winning 26 of 40 grand slam events, including all four majors in 1988. PING pros Bob Tway and Mark Calcavecchia also enjoyed major success, winning the PGA Championship and British Open, respectively.