Category Archives: Players Perspective

Wilson SHIFT 99 PRO – Jason’s Racquet Review


Fun racquet to try! Very different in both looks and feel, from the usual Wilson offerings. More suited to the advanced player, and aggressive baseliners who play with fast swing speeds, and a lot of spin.


The most noticeable impression, on first pick up, of the PRO version, was the slightly thicker beam, and overall heft of the racquet. At 327g swing weight, this racquet is definitely in the heavyweight category, but it had a good feel in the hand, and generally good maneuverability, both at the baseline and at the net. As for looks, the contemporary aesthetics are very different from the usual Wilson look, and the string bed looks noticeably tighter than I’m used to.


The sweet spot on this racquet feels small, suiting it to a more advanced player. Faster swing speeds seemed to produce more control, but with the smaller sweet spot, and low dwell time, I experienced some balls flying when I didn’t expect them to. The tight string bed does produce a lower trajectory, but I didn’t find that this prevented those occasional wayward balls. At the net, the racquet had a damper feel than I’m used to, and again, I felt I was in control as long as I hit the sweet spot.


I was looking forward to testing this racquet because of the new increased horizontal bending in the head of the racquet, which should generate more spin. Hitting my regular strokes, I didn’t notice any extra spin being produced naturally. However, when I really tried to increase the swing speed, and increase the spin myself, the racquet responded well and would allow for great spin creation.


The thick beam gave the racquet a very solid and stable feel, and with the weight of the racquet, it was very powerful coming off the sweet spot. Great on days you’re playing well, but if you miss the sweet spot the racquet had a dull, non-responsive feel. Solid on returns and good momentum, but the flatter hitter may struggle for control.


This is a very different racquet that takes a while to get used to. It would be well suited to an advanced player, who swings fast, and already plays with a lot of spin. Don’t expect this racquet to transform flat strokes into heavy topspin. I tested at 55 lbs but would string a little tighter than this if using it again.

Now you have Jason’s perspective! Click here to look at the “numerical” review of this racquet and see how the two reviews stack up!

I did also test the non-pro version of the Shift. With the more open string bed and lighter weight, I experienced even more balls flying long than with the pro version. It was definitely more forgiving on the arm, and easier to maneuver, but the trade-off was less control. Would be well suited to a more intermediate player. I feel an advanced player would have to add some extra weight, and string tighter.

Click here to see Jason’s tennis biography. Please contact Jason if you have questions or anything to contribute to the review!

A Players Perspective

We are really happy to have Jason Harne join us to review and add his comments on tennis racquets and tennis strings!

I think you will agree that Jason will be a great addition to based on the following tennis bio:

Jason Harne – Tennis

  • Pro tennis – futures tournaments and satellites
  • Stirling University, Scotland. One of the first players to be awarded the British Universities Tennis Bursary Colors Award (equivalent to All-American)
  • International home nations tournament, representing Scotland, player of the tournament award.
  • England county cup, division one, representing Yorkshire County.
  • Spain and UK, national league tennis
  • High Point University, Big South Conference, 22-2 record.
  • U21 guardian direct British futures, national champion, and fastest UK serve.
  • Teaching pro, UK and Spain, high-performance players

This is very impressive but the most important component for us, and you, is Jason’s incredible interest in new things!  Jason is willing to try, and honestly comment on, any performance tennis equipment.

Jason will be commenting on the new Wilson Shift series later this week.

Please leave a comment or question for Jason.


Wilson Shift 99/300

After the success of the Wilson Labs version of the Shift technology, Wilson decided to make a retail version. We have received the retail version of the unique racquets and certainly want to share!

Just looking at the racquet, you may ask, “What is unique about it?” Even though the term AI is overused, in this case, it was just used! Some of the concepts of the designers were fed to AI, and it went to work!

Wilson Shift 300

We don’t know the details of the AI prompts, but we do know the very wide throat will accommodate the in-plane flexure of the shaft, which lets the head move downward upon impact and then move back while the ball is in contact with the string, therefore, contributing to “spin.”

This 99-square-inch racquet comes in two (2) versions, the 300-gram and 315-gram “Pro,” with an 18×20 string pattern.

We can feel some flex in the shaft; however, the real test is hitting with this concept, so come in and try the demo.  In the meantime, take a look at the numbers.

After the numbers, be sure to watch the Wilson video of the Shift 99/300!
Racquet ModelWilson Shift 300
Reference Tension58
PEEK 7710
Machine UsedTrue Tension Professional
String Bed Stiffness - RDC53.0
String Bed Stiffness -FlexFour63.5
String Bed Stiffness - SBS43.0
String Bed Stiffness - ERT35 kg/cm
Racquet Flex, RDC69 After Stringing
Racquet Flex, FlexFour43.0
Racquet - In Plane Stiffness400.0 Lbs/In
Weight, Grams330
Weight, Ounces11.64
Balance, mm325
Balance, Inch12.80
Length, Cm68.6
Length, Inch27.03
Head Width9.82
Head Length12.75
Head Area, cm2634.0
Head Area, Sq. Inch98.3
Beam Height @ Grip, mm23.0
Beam Height @ Mid, mm24.0
Beam Height @ Tip24.0
Beam Width @ Grip, mm12.75
Beam Width @ Throat, mm12.8
Beam Width @ Mid, mm11.1(PWS)
Beam Width @ Tip, mm13.0(including bumper)
Number of Main Strings16
Number of Cross Strings20
Ratio Cross/Mains.616
Main String Grid7.25
Cross String Grid10.81
Density (% of head filled with string)71.7 %
Average Cross String Space.494
Average Main String Space.446
Dynamic Tension, Kp, ERT MasterTensometer35 kg/cm
Dynamic Tension, Lbs/in195.78
First Moment, Nm.826
Polar Moment337.0
Torsional Stability17
Swing Weight, Kg/cm2320
Swing Weight, Ounces11.29
Swing Weight Calculated348.6 (full-length)
Power, RDC54.0
Control, RDC48.0
Manueverability, RDC73.9
Power, Calculated 2191.7
Head Points5.67
Head Weight, %47.4%
Center of Percussion20.9
Dwell Time, ms8.74
Efective Stiffness - lbs30.0
K, Lb/In159.87
Recoil Weight155.31
Twist Weight237.78
End Weight 133.1
Tip Weight 194.6
9 O'Clock98.4
3 O'Clock100.6
Butt Cap129.0
COF, Main.396
COF, Cross.319

Stop by the World Headquarters of Racquet Quest, LLC,  pick up a demo, and experience this for yourself!