While we already knew of these were the focus, the June 8th specifics suggest as much as a thirty percent reduction for the longest of long hitters. Stachura writes:
The original proposed change was to raise the test swing speed for the Overall Distance Standard from the current 120 miles per hour to 125. The June 8 announcement now proposes studying a test speed “between 125 and 127 mph and will include studies of the effects of these test speeds on the launch conditions and aerodynamics of the golf ball.” At the maximum, that speed would be more than 12 mph faster than the current average clubhead speed on the PGA Tour but only a little more than two mph faster than the two current fastest swings on tour, Cameron Champ (124.76) and Branden Hagy (124.41).
As the USGA’s John Spitzer previously indicated when the speed being considered was 125 mph, nearly all of the balls played on tour would be non-conforming under the new standard, and of course many of those balls are also among the most purchased balls on the market.
The bigger set of changes proposed in the June 8 notice, however, would not affect average golfers, but could dramatically alter the performance of drivers at the elite level. The new proposal suggests tournaments or tours could institute a “model local rule” for equipment that would severely roll back how springy faces are and how forgiving drivers are on off-center hits.
As Stachura notes, these are just proposals and may have been crafted to begin a discussion, listen to the inevitable whining, and negotiate to a place that would keep courses relevant and anticipate the next generation of decathletes reared on modern stuff.
The notice also appears to have taken a few things off the table: grooves, changing the size of the ball or minimum ball spin.
Interested parties have until September 2nd to get their comments submitted. To date the manufacturers have been largely silent on the proposals.
