Category Archives: ProStaff
Wilson Pro Staff Six One 100, v14
As you know the Wilson Pro Staff Six One franchise has been around about as long as wooden racquets have been gone! A long time!
Many racquets have come and gone. Some should not have “come” and some should not have “gone”, in my opinion.
This racquet, to me, is the epitome of the Pro Staff Six One series for a few reasons.
- The 100-square-inch head size is ideal.
- The thin 22mm beam is perfect.
- The Shiny Rust finish is the best of all Pro Staffs!
- The geometry and proportions are perfect.
- The stiffness (flex) is satisfyingly low.

Wilson shiny Rust Pro Staff Six One 100
The specifications will tell us more about the racquet, but here are some things that don’t appear on the “spec” sheet.
- This is a foam-filled racquet.
- The FORTY-FIVE layup is used in this racquet.
- The grommet barrels are large enough to allow string movement.
- The bumper guard “string valley” is very deep.
Let’s take a look at the specifications.
Manufacturer | Wilson |
---|---|
Racquet Model | Wilson Pro Staff Six One |
Reference Tension | 55 |
String | PEEK 7710 |
Machine Used | True Tension Professional |
String Bed Stiffness - RDC | 52.0 Units |
String Bed Stiffness -FlexFour | 58.6 Pounds |
String Bed Stiffness - SBS | 50.6 pounds |
String Bed Stiffness - ERT | 35 Kg/Cm |
Racquet Flex, RDC | 63 - After stringing |
Racquet Flex, FlexFour | 50.0 |
Racquet - In Plane Stiffness | 487.2 Lbs/Inch |
Weight, Grams | 332 |
Weight, Ounces | 11.71 |
Balance, mm | 330 |
Balance, Inch | 12.99 |
Length, Cm | 68.6 |
Length, Inch | 27.03 |
Head Width | 9.87 |
Head Length | 12.82 |
Head Area, cm2 | 641.2 |
Head Area, Sq. Inch | 99.4 |
Beam Height @ Grip, mm | 22.0 |
Beam Height @ Mid, mm | 22.0 |
Beam Height @ Tip | 22.0 |
Beam Width @ Grip, mm | 12.85 |
Beam Width @ Throat, mm | 12.65 |
Beam Width @ Mid, mm | 12.38 (PWS) |
Beam Width @ Tip, mm | 12.27 (including bumper) |
Number of Main Strings | 16 |
Number of Cross Strings | 19 |
Ratio Cross/Mains | .648 |
Main String Grid | 7.20 |
Cross String Grid | 10.06 |
Density (% of head filled with string) | 72.9% |
Average Cross String Space | .529 |
Average Main String Space | .450 |
Dynamic Tension, Kp, ERT MasterTensometer | 35 |
Dynamic Tension, Lbs/in | 195.76 |
First Moment, Nm | .847 |
Polar Moment | 343.0 |
Torsional Stability | 16 |
Swing Weight, Kg/cm2 | 327 |
Swing Weight, Ounces | 11.53 |
Swing Weight Calculated | 361.5 (full-length) |
Power, RDC | 51.0 |
Control, RDC | 50.0 |
Manueverability, RDC | 69.0 |
Power, Calculated | 2067.9 |
Head Points | 4.00 |
Head Weight, % | 48.1 % |
Center of Percussion | 20.8 |
Dwell Time, ms | 8.82 |
Efective Stiffness - lbs | 28.5 |
K, Lb/In | 166.67 |
Recoil Weight | 153.88 |
Twist Weight | 241.58 |
End Weight | 131.0 |
Tip Weight | 201.5 |
9 O'Clock | 100.9 |
3 O'Clock | 102.3 |
Butt Cap | 128.6 |
COF, Main | .340 |
COF, Cross | .366 |
Wilson Pro Staff v14

Wilson Pro Staff 97 v14

Wilson Pro Staff v14
The initial response to the new Wilson Pro Staff 97 v14 graphics pack is similar to the Blade shifting color graphics…you either like it, or you don’t! There seems to be very little “in-between.”

Wilson Pro Staff v14
We care about the racquet’s appearance, but we really care about the specifications!
So here we go…
Manufacturer | Wilson |
---|---|
Racquet Model | Wilson Pro Staff 97 v14 |
Reference Tension | 55 |
String | PEEK 1.25mm |
Machine Used | True Tension Professional |
String Bed Stiffness - RDC | 51.0 Units |
String Bed Stiffness -FlexFour | 64.1 pounds |
String Bed Stiffness - SBS | 49.0 pounds |
String Bed Stiffness - ERT | 34 Kg/Cm |
Racquet Flex, RDC | 66 - After stringing |
Racquet Flex, FlexFour | 49.0 |
Racquet - In Plane Stiffness | 447.2 lbs/Inch |
Weight, Grams | 330 |
Weight, Ounces | 11.64 |
Balance, mm | 324 |
Balance, Inch | 12.76 |
Length, Cm | 68.57 |
Length, Inch | 27.00 |
Head Width | 9.438 |
Head Length | 12.80 |
Head Area, cm2 | 623.0 |
Head Area, Sq. Inch | 94.9 |
Beam Height @ Grip, mm | 21.0 |
Beam Height @ Mid, mm | 21.8 |
Beam Height @ Tip | 21.8 |
Beam Width @ Grip, mm | 11.1 |
Beam Width @ Throat, mm | 11.0 |
Beam Width @ Mid, mm | 11.0 |
Beam Width @ Tip, mm | 12.8 (includes bumper guard) |
Number of Main Strings | 16 |
Number of Cross Strings | 19 |
Ratio Cross/Mains | .621 |
Main String Grid | 7.25 |
Cross String Grid | 10.13 |
Density (% of head filled with string) | 77.4% |
Average Cross String Space | .533 |
Average Main String Space | .453 |
Dynamic Tension, Kp, ERT | 34 |
Dynamic Tension, Lbs/in | 190.16 |
First Moment, Nm | .822 |
Polar Moment | 336 |
Torsional Stability | 14 |
Swing Weight, Kg/cm2 | 322 |
Swing Weight, Ounces | 11.36 |
Swing Weight Calculated | 346.4 |
Power, RDC | 53 |
Control, RDC | 47 |
Manueverability, RDC | 72 |
Power, Calculated | 2036.6 |
Head Points | 5.98 |
Head Weight, % | 47.2% |
Center of Percussion | 21.1 |
Dwell Time, ms | 8.91 |
Efective Stiffness - lbs | 28.8 |
K, Lb/In | 163.46 |
Recoil Weight | 158.78 |
Twist Weight | 220.98 |
End Weight | 134.0 |
Tip Weight | 195.9 |
9 O'Clock | 100.8 |
3 O'Clock | 100.5 |
Butt Cap | 128.1 |
COF, Main | .323 |
COF, Cross | .323 |
ZUS Tennis
Never heard of them? I hadn’t either until yesterday!
ZUS is a Chicago-based company that offers several racquets with various specifications available.
A ZUS Custom Sven Goth Design came in for work, so we had a great opportunity to get all of the specifications and include them in a “racquet review”!
First, the racquet seems to be a well-made version of the Wilson Pro Staff RF, with an ever so slightly thinner modified box section beam. the geometry is very much like the Wilson Pro Staff RF, as is the weight.
This racquet has a bunch of weight at the rear end, plus a shrink sleeve to increase the grip size, so it is loaded up with weight down there, which is OK!

Rear Weight
The racquet is foamed, probably the entire tube, which may contribute a more muted feel than a non-foamed racquet. The Pro Staff RF is also foam filled.
The small oval piece is a lead or steel, weight sandwiched between the two halves of the shaft. This construction makes it impossible to remove that weight if you want to, but it is good to have it there!
Manufacturer | ZUS |
---|---|
Racquet Model | ZUS Custom Sven Goth Design |
Reference Tension | 50 |
String | Prince Tour XR 16 |
Machine Used | True Tension Professional |
String Bed Stiffness - RDC | 53.0 Units |
String Bed Stiffness -FlexFour | 59.1 pounds |
String Bed Stiffness - SBS | 50.6 pounds |
String Bed Stiffness - ERT | 35 Kg/Cm |
Racquet Flex, RDC | 63 - After stringing |
Racquet Flex, FlexFour | 41.0 |
Racquet - In Plane Stiffness | 438.0 lbs/Inch |
Weight, Grams | 354 |
Weight, Ounces | 12.49 |
Balance, mm | 316 |
Balance, Inch | 12.44 |
Length, Cm | 68.57 |
Length, Inch | 27.00 |
Head Width | 9.41 |
Head Length | 12.80 |
Head Area, cm2 | 610.1 |
Head Area, Sq. Inch | 94.6 |
Beam Height @ Grip, mm | 20.5 |
Beam Height @ Mid, mm | 20.2 |
Beam Height @ Tip | 20.6 |
Beam Width @ Grip, mm | 10.8 |
Beam Width @ Throat, mm | 10.8 |
Beam Width @ Mid, mm | 11.6 |
Beam Width @ Tip, mm | 12.4 |
Number of Main Strings | 16 |
Number of Cross Strings | 19 |
Ratio Cross/Mains | .619 |
Main String Grid | 7.25 |
Cross String Grid | 9.68 |
Density (% of head filled with string) | .742 |
Average Cross String Space | .509 |
Average Main String Space | .453 |
Dynamic Tension, Kp, ERT | 35 |
Dynamic Tension, Lbs/in | 195.76 |
First Moment, Nm | .854 |
Polar Moment | 348 |
Torsional Stability | 18 |
Swing Weight, Kg/cm2 | 330 |
Swing Weight, Ounces | 11.64 |
Swing Weight Calculated | 353.5 |
Power, RDC | 51 |
Control, RDC | 49 |
Manueverability, RDC | 67 |
Power, Calculated | 1965.9 |
Head Points | 8.46 |
Head Weight, % | 46.1% |
Center of Percussion | 20.9 |
Dwell Time, ms | 8.74 |
Efective Stiffness - lbs | 28.8 |
K, Lb/In | 169.87 |
Recoil Weight | 167.26 |
Twist Weight | 235.57 |
End Weight | 151.7 |
Tip Weight | 197.9 |
9 O'Clock | 105.5 |
3 O'Clock | 108.1 |
Butt Cap | 137.1 |
COF, Main | .382 |
COF, Cross | .306 |