further-reduced the length limitation to —the maximum length allowed by the USGA. Club-heads usually approach the 460 cubic centimeter limit, rarely below 400 cc. They must stay within the coefficient of restitution (COR) limit of 0.83, which measures how a ball hits off the surface. Most club-heads only approach the COR in the center of the club, so technology has allowed more area of the club to possess a COR of above 0.80. Thus, mishits are less affected by the newer clubheads. The loft of a long drive club is also much lower than a consumer club, sometimes around 4 or 5 degrees, as opposed to 10.5 degrees for an amateur's driver. The reason for lower lofted driver heads is to greatly reduce back spin. Too much back spin causes the ball to balloon or climb, creating a steep landing angle which does not allow the ball roll out. A flatter landing angle is desired to get the most out of the ball's forward velocity and energy. Many competitions require golfers to use a specification ball for the tournament. The specific design characteristics of this ball include a dimple design that helps to maintain lower spin rates and a ball compression of 110. The average ball compression in golf varies from the mid-70s to the upper 80s. Notable long drivers Kyle Berkshire, World Long Drive Champion - 2019 & 2021 Maurice Allen, World Long Drive Champion - 2018 Justin James, World Long Drive Champion - 2017 - Ranking #1 in the World was maintained until June 2019 Joe Miller, World Long Drive Champion 2010 & 2016 Tim Burke, World Long Drive Champion - 2013 & 2015 David Mobley, World Long Drive Champion – 2004 – Ranked #1 in the World by Long Drivers of America in 2003, 2004, and 2005 Mike Austin, He was credited by Guinness World Records with hitting the longest drive in tournament play (471m/515 yards) in 1974 Sean Fister ("The Beast"), World Long Drive Champion 1995, 2001, 2005. Monte Scheinblum, 1992 U.S. National and World Long Drive Champion. Jason Zuback ("Golfzilla"), World Long Drive Champion 1996, 1997, 1998, 1999, 2006.Seniors World Long Drive Champion 2015. Sandra Carlborg, Ladies Division WR holder 391,Yards World Long Drive Champion 2011,2012,2014,2015, 2017 Phillis Meti 2006, 2016 & 2018 Women's World Long Drive Champion. WR for women's longest drive 413 yards and being the youngest female World Champion 19 years, 2