Gear: Wilson Staff D9 irons
Price: $649.99 with KBS Max Ultralite steel shafts and Lamkin Crossline Genesis grips; $749.99 with Mitsubishi Tensei graphite shafts
Specs: Cast stainless steel with urethane
Available: Jan. 27
For the past several seasons, Wilson’s Staff D Series irons have been the company’s go-to clubs for mid- to higher-handicap golfers looking for more distance. They are also more forgiving than the cavity-back and muscleback blade irons that Tour stars like 2019 U.S. Open winner Gary Woodland use. The latest version, the D9 irons, build on that tradition thanks to the power of supercomputing and a new way of designing one of Wilson’s signature technologies.
For several seasons, Wilson designers have added symmetrically positioned holes around the heads’ perimeter to create areas where the faces can flex more efficiently at impact. Wilson refers to them as Power Holes, and the idea is that the more the face flexes, the larger the sweet spot can be, so golfers can get better performance when they hit the ball in the middle of the face and when they mis-hit.
In the Staff D9 irons, extensive computer modeling (Wilson calls it Intelligent Design) helped determine the Power Holes’ shape and position. It simulated hundreds of iron designs to determine the ideal location and size of each hole.
Referred to as Power Holes 2.0, the holes now vary in size and are no longer symmetrical. Looking at the Staff D9 irons’ sole, golfers will see that the holes, which are covered with urethane to keep grass and dirt out of the heads, tend to be larger in the heel area and smaller in the toe section. Why? Golfers tend to miss more often in the heel area than the toe, so making that portion more flexible will help a larger number of golfers.
To take advantage of the increased ball speed golfers can generate with the Staff D9 irons, Wilson designers also lowered the center of gravity to encourage a higher launch and a steeper angle of descent.
The Staff D9 irons have a reassuring amount of offset, and the topline is also on the thick side, which should induce confidence for players who struggle to hit their irons solidly. The soles are also wide to help the clubs avoid digging into the turf on fat shots.
original article link https://golfweek.usatoday.com/2021/01/22/wilson-staff-d9-irons/