Category Archives: Good News!

New Head MXG 7

Head is introducing two (2) new racquets to the MXG Series, and this is an excellent thing in my opinion!  It is not that we need a bunch of new racquets, but this signals a commitment to the MXG concept.

In case you don’t know, the MXG Series racquets incorporate a “string suspension system” (my words) into the throat of the racquet.  The most notable of this system is the bright silver paint. However, the most important functions are the increase in main string length across the entire throat area and torsional stability that contributes to control of this 115 square inch racquet.  We now have ten (10) main strings that are the same length in the throat.  These 15.0 inch long main strings do contribute to “power”.

The Head MXG 7 has a slightly “fanned” pattern for the 16 x 18 string format and a built-in vibration damper in the throat.  The MXG 7 will accept the Head Tennis Sensor.

The Head MXG 7 is a 115 +/- square inch head with a variable beam (28, 29, 26mm) that puts it in the “game improvement” category.  You will see all the specifications below.  If you are considering a new racquet and prefer power,”. this is a “must see.”  Head has always done a good job in the game improvement category, and this adds a new dimension to the series.

Head MXG 7

The MXG 7 demo is here so call to reserve your spot!

The MXG 7 is available for pre-order and will be available May 11.

Racquet ModelHead MXG 7
Reference Tension57
Head Velocity MLT 17
Machine UsedTrue Tension Pro
ASPS, FlexFour55.0
Racquet Flex, RDC67
Racquet Flex, FlexFour50
Weight, Grams282
Weight, Ounces9.95
Balance, mm370.0
Balance, Inch14.57
Length, Cm69.7
Length, Inch27.44
Head Width10.13
Head Length14.75
Head Area, cm2756.7
Head Area, Sq. Inch118.8
Number of Main Strings16
Number of Cross Strings18
Ratio Cross/Mains.610
Main String Grid8.56
Cross String Grid11.31
Density (% of head filled with string).793
Average Cross String Space.622
Average Main String Space.519
Dynamic Tension, Kp, ERT32
Dynamic Tension, Lbs/in178.98
First Moment, Nm.830
Polar Moment340.0
Torsional Stability18 (the difference between polar moment and swing weight. Higher is better)
Swing Weight, Kg/cm2322
Swing Weight, Ounces11.36
Swing Weight Calculated386.1
Power, RDC59
Control, RDC42
Manueverability, RDC72
Power, Calculated 2631.7 (compare to 1996.9 for the MXG 1)
Head Points-6.77 (negative = head heavy. See % below)
Head Weight, %53.1%
Center of Percussion20.6
Dwell Time, ms9.70
Effective Stiffness26.2
K, Lb/In137.82
Recoil Weight118.85
Twist Weight215.2

What is “Best Overall Performance”?

In our “Recommended Stringing Frequency” calculator we state that this frequency is to get the best possible performance from your racquet.   But, what exactly is “best performance”?

To establish this we need to take you, the player, out of the picture for a moment and concentrate on the racquet and string setup.  the reason is simple:  no two players strike the ball the same way.

We start with “Swing Weight” which is the most important dynamic property of a racquet.  So a higher swing weight will contribute to power and stability, thus performance.

Overall weight is important because you need to be able to get the racquet to the court and out of your bag!  Heavier racquets contribute to energy, stability, and comfort.

Effective Stiffness is important because it represents the stiffness of the string bed (SBS) and the racquet stiffness (xxRA, or something like that).  This number represents the impact each time you strike the ball.  The higher the number, the stiffer, of course.

Of the four (4) things mentioned above we can control the string bed stiffness with ease.  One of the easiest methods is to string your racquet regularly to maintain the effectiveness of the elongation of the string being used.  Elongation relates to energy return in a string and while strings will stay resilient for a long time a well-worn string takes a while to return energy to the ball.

You, the player, of course, determine performance so when using the SFR you can enter a high UTR or Style rating or a low UTR or style rating if maximum performance is not required.

New Head MXG 1

Head is introducing two (2) new racquets to the MXG Series, and this is an excellent thing in my opinion!  It is not that we need a bunch of new racquets, but this signals a commitment to the MXG concept.

In case you don’t know, the MXG Series racquets incorporate a “string suspension system” (my words) into the throat of the racquet.  The most notable of this system is the bright silver paint. However, the most important function(s) is the increase in main string length across the entire throat area and torsional stiffness for control.  We now have ten (10) main strings that are the same length in the throat, and this does contribute to “power.”

The Head MXG 1 is a 98 square inch head with a thin beam (22mm) that puts it in the “player” category, but it may need additional weight for big hitters.  You will see all the specifications below.  If you are a player and have shied away from the MXG for head size reasons, this is for you!

Head MXG 1

The MXG 1 demo is available now.  Call to reserve it!

The new MXG 1 is available for pre-order and will available May 11, 2018.

Racquet ModelHead MXG 1
Reference Tension53
Head Velocity MLT 17
Machine UsedTrue Tension Pro
ASPS, FlexFour59.0
Racquet Flex, RDC65
Racquet Flex, FlexFour48
Weight, Grams312
Weight, Ounces11.01
Balance, mm319.0
Balance, Inch12.56
Length, Cm68.5
Length, Inch26.986
Head Width9.51
Head Length13.50
Head Area, cm2649.9
Head Area, Sq. Inch100.7
Number of Main Strings16
Number of Cross Strings19
Ratio Cross/Mains.593
Main String Grid7.20
Cross String Grid9.37
Density (% of head filled with string).658
Average Cross String Space.490
Average Main String Space.445
Dynamic Tension, Kp, ERT34
Dynamic Tension, Lbs/in190.16
First Moment, Nm.762
Polar Moment320.0
Torsional Stability15 (the difference between polar moment and swing weight. Higher is better)
Swing Weight, Kg/cm2305
Swing Weight, Ounces10.76
Swing Weight Calculated317.5
Power, RDC51
Control, RDC51
Manueverability, RDC83
Power, Calculated 1996.9
Head Points7.40
Head Weight, %46.6%
Center of Percussion21.5
Dwell Time, ms9.00
Effective Stiffness28.3
K, Lb/In160.26
Recoil Weight157.54
Twist Weight211.48

WPRC Member Guest 2018

Jack Anthrop teamed with Chris Granville to play in the 2018 version of the Winter Park Racquet Club Member-Guest Tournament this weekend. This highly anticipated event brings most of the best tennis players from around the area, and beyond, to compete for beer as nearly as I can tell.

Jack, at age 14, does not drink beer so he is playing for the experience and fun of competition as if he doesn’t get enough during the week at the USTA Center in Orlando, daily training, and other tournaments around the country.

“Quiet in the Stands” does not apply for this family-friendly event managed by Rich, Robert, Nancy and the entire WPRC Staff.  Well Done!

Congratulations Sophie!

A huge congratulations go out to Sophie Williams for her terrific run at the recent Easter Bowl in Indian Wells, Ca.!

Sophie played the finals against the number 3 seed Elena Yu…

Having the experience of making the Girls’ 12s final last year, Eleana Yu of Mason, Ohio, said she only had to fight a moderate case of nerves as the No. 3 seed won the Girls’ 14s USTA gold ball and her first Adidas Easter Bowl national title with a 6-1, 6-0 win over No. 7-seeded Sophia Williams of Charleston, S.C.

“Having been in the final before really did help,” said the 13-year-old Yu. “I did feel a little nervous at the start, but once I found my rhythm it was fine and I just felt really confident. I think my opponent was more nervous, but the match was definitely closer than the score indicated.”

Sophie’s great result at the Easter Bowl continues her recent extraordinary results at tournaments around the country.  Below is Sophie holding the first place trophy of a previous tournament.

Sophie, the Winner!

Sophie, the Winner, again!


If you have been to Racquet Quest in the past several years, you have probably seen some of Sophie’s forty-five (45) racquets either in “process” or being prepared to ship to her.  Sophie is left-handed, so all the leather grips and overgrip is wrapped left-handed, and each racquet is “sequenced”.  All of the racquets are “matched.” so the only thing that is different is the string bed stiffness (SBS).

Even racquets that are done on the same day may have slightly different string bed stiffness numbers due to the time between racquet number one and racquet number eight.  Sequencing indicates in what order the racquets can be used.

That may seem like a lot of racquets, but if you play as many tournaments as Sophie you need a few!

When Sophie is in town, she is either at the USTA Center or training with Robert Kendrick at the Winter Park Racquet Club.

Congratulations, Sophie!



What Keeps Us Going?

Have you ever wondered what keeps the Racquet Quest World Headquarters going? I can’t imagine why you would, but here it is anyway!



These are made in France, of course, so they are good for you, and after work, they pair up nicely with a good Bordeaux!


String Failure (continued)

In a previous post, we saw string failure(s) for the same string, i.e., not a “hybrid” format.

In this post, we will see the typical failure of a “hybrid” format using polyester for the main string and a multifilament for the cross string.

The polyester string shows very little wear whereas the multifilament cross string has completely come apart.  This is exactly what one would expect, and frankly, hope for.

This failure indicates the main string is moving across the cross strings which allows the ball to “catch” the main string and begin to “rotate.”

Players may decide on a hybrid format in the belief that the multifilament cross string will significantly mitigate the stiffness of the polyester main string.  Depending on what strings are used this, may or may not be true.

For comparison purposes, this racquet has about seven (7) hours of hitting while training,  That probably relates to about twenty (20) hours of “normal play” for this person.

The caption of this post is “String Failure” but while this string is definitely failed it is not a “failure”.  This setup did exactly what it is intended to do for this player.

Rely on History!

As racquet technicians, we are bombarded with “new product” information! Especially when it comes to racquet string!


So what do you and we need to know when making a string decision?

History, that’s what.  The image shows just some historical data points.

We can look at data for any string and client to determine the history of that combination.  If the history is a good one, we can make an excellent decision based on it.  And, of course, the converse is true.

When a client comes in for the first time, it is imperative to have a real discussion about the needs of the player.  In some cases, the “need” is far different than the “want”.  I found that most clients will listen to what we have to say and we can say it with some conviction because we have the “history” to confirm our conviction(s).

So, know your history!

Yonex VCore Pro

Yonex seems to be on a roll right now with several years of outstanding performance racquets!  Well, with the VCore Pro Series they have pushed that ball a little faster, and harder!  It is rolling now!

Let’s run down some of the specs on each of the three (3) VCore Pro racquets.

It is no surprise that the Pro 97 330 is the heaviest of the three because it very subtly says so right on the racquet (330).  The Pro 97 310  has a meager swing weight (304) to accompany the lower weight of 310.  I believe these are so low that some players will opt for the VCore Pro 100 which is a bit stiffer (RDC Flex) than the 97’s.

However, the VCore 97 330 feels the best of all of them because you know what it is meant to do.

In addition to the great “players” specs, these racquets are the best looking from Yonex in a while in my opinion!

Yonex VCore Pro Series

If you are interested in a racquet series that is dedicated to performance, you need to try one of these new Yonex VCore Pro racquets.

This series is a “thin beam” design (21mm) with the traditional Yonex head shape that sort of equalizes the length of the main and cross strings in the center of the racquet offering a controlled feel.

This series like most of the Yonex performance racquets are made in Japan. The consistency of specification is very good if you carry several racquets and want them to feel the same.

The demos are in the shop and available for your consideration!


String Failure(s) Redux

If you have taken advantage of our Stringing Frequency Calculator on this site you know that stringing often is the path to better play!

But what if the strings break before you can re-string, and why do they break!

Strings wear out!  The picture shows what that may look like.  A clean break close the area the ball is hit most often If you look closely you will see “notches” caused by the rubbing friction between the strings.   This is an OK failure.  This is a polyester string so the break is clean as opposed to a multifilament string that will “fray” before it fails.


DSC04618These are the same racquet model and same string and tension.  The image on the right shows a failure by Shanking!  This is the dreaded failure mode because it can happen on the first shot or the hundredth shot…you never know, and it is frustrating!

This string is considered to be very tough but not many strings can stand up to the shear load and impulse of a mis-hit, aka “shank”.

I have discovered over the years that the shanking failure occurs more often amongst tournament level women players! My theory is that with stiff strings, that doesn’t return much energy, the player’s strokes have to be harder, and if the shot hits near the frame, it may cause the shanking failure.

This kind of failure can also be associated with decreased footwork as a player gets tired.  Reaching “way out” for a ball instead of getting set up for it can put the impact zone right at the tip of the racquet and a shank occurs.

String failure(s) in this area used to be blamed on a “bad grommet’.  A bad grommet is hardly likely anymore with the much better materials being used.  It is still possible, however, and you need to keep grommets in good repair!

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