Jak Beardsworth Tennis logo
e-mail Jak
Jak Beardsworth Tennis

JAK'S MONTHLY ESSAY SERIES: Achieving Your Personal Best

E. I. D. - Extended Impact Duration

December 2022

Acronyms are seemingly becoming more and more popular with each passing year in sports, and in other arenas as well, like politics. Never mind.

The G.O.A.T. is a sport oriented one that just about everyone recognizes –"the greatest of all time" for those of you who've been marooned on a desert island for a while. It gets thrown around like monopoly money, ignoring the generational factors that make labeling any star current players absolutely superior over past star players, in tennis or otherwise, a fool's errand.

Digital drawing of advanced viusalization practices in Tennis

Let's not even attempt any Rod Laver vs Roger Federer vs Rafa Nadal vs Novak Djokovic vs Jack Kramer vs Pancho Gonzales vs Pete Sampras etc. declaration. Or Althea Gibson vs Mo Connolly vs Serena Williams vs Steffi Graf vs Billie Jean King vs Margaret Court, on and on.

See what I mean. No can do. Impossible. And total titles and majors won do not always reveal the complete story. Example: Steffi Graf won 21 majors and retired at 30. Serena won 22 and retired/"evolved" at 40. And how many would Laver have won if he was not exiled from the tour, including majors, for joining the then outlaw pro tour and making some money legitimately instead of the under the table payoffs back in the shamateur days of tennis.

An acronym that you are not familiar with, in a more instructional vein, is E.I.D. – "extended impact duration." You've never heard that one previously since I just coined it recently while trying to help a quick strike player I was working with become more aware of the all-important ball on racket dynamic.

My take goes back to Andre Agassi's repetitive press conferences (when the networks used to show them frequently) where he would always express the same three themes after a winning performance: 1) "I saw the ball well today;" 2) "I moved well today;" 3) and the inspiration for my E.I.D. acronym –" I had good feel for the ball today."

You've all experienced #3 at one time or another. That indescribable feel and connection to the ball at the impact moment. That empowering distinct sound of the ball being compressed on the strings for that extra millisecond. The effortless power and on the money placements.

That's fluidity, or Bruce Lee's "liquid".

Viewing an incoming ball as the enemy, as many do, and then suddenly quick hitting it back – minimizing that $200+ racket's capabilities – versus welcoming it instead as an opportunity to work with the ball ,not against it, the latter being an undermining trait so prevalent in the club game.

How about absorb it, use it, team-up with it, re-direct it. Maximizing that expensive racket DNA.

Today's rackets have myriad stiffness and swing weight ratings not noted on the frame (recommend seeing Rich at Wrigley's Tennis in Punta Gorda, or check in with your regular pro shop wherever you are to find out if your stick matches your level, game style, and physicality). Strings also have varying properties to produce extra power or extra control depending on their strung tension and string type. Also, balls are designed to deform x-amount on impact. And grips are important too and should always be fresh and tacky, to favorably reduce the all too common stranglehold grip tension.

So when you do experience those perfect storm contacts when the ball is actually remaining on the strings for that maximum extra delicious five-thousands of a second. Fleeting I know. So fleeting it takes a high-speed camera to capture that exact impact moment, or, as I like to characterize it, the ball, ideally, leaving the racket face when it's good and ready. Embracing the contact moment vs avoiding it.

Accelerating the racket and decelerating it in the contact moment – not hitting through the ball - is always a problem, especially on serve. It's much like backing up your car and noticing it's not moving freely because you left the emergency brake on.

No shot making telltale brakes everyone!

Finally, in the simplest of terms, you can be your best by hitting through the ball – E.I.D. - not at it. Put some stick on it as Brad Gilbert would say on the Tennis Channel. Let it go. Trust it!

Copyright© by Jak Beardsworth Tennis. All rights reserved, including the right of reproduction in whole or in part in any form.

COMMENTS WELCOME: JB1tennis@comcast.net

Jak Beardsworth Tennis Home Page

Past Essays

  • March 2023 - Classic finish line failure
    [read more]
  • February 2023 - Defending the lob over your net partner – The "Switch"
    [read more]
  • December 2022 - E. I. D. - Extended Impact Duration
    [read more]
  • November 2022 - Movement Enhancement to Stay Better In-Point Connected
    [read more]
  • September 2022 - Advanced Visualization 301
    [read more]
  • August 2022 - Tennis' uniqueness: warming-up the enemy
    [read more]
  • July 2022 - Extracting Double Faults Through Receiving Positions... and more
    [read more]
  • June 2022 - Consider Serve and Volley
    [read more]
  • May 2022 - How the Toss Primes the Serve Relaxation Pump
    [read more]
  • April 2022 - Ball Watching and Science
    [read more]
  • March 2022 - Caving
    [read more]
  • February 2022 - Kenny G and Emmo
    [read more]
  • January 2022 - The Knees
    [read more]

Essay Archives

Click a year to view more essays


  • December 2021 - The Match is with You
    [read more]
  • November 2021 - The Backup Racket in Your Bag
    [read more]
  • October 2021 - Every Tennis Player Can and Should Have a Weapon
    [read more]
  • September 2021 - LEARNING NEW SKILLS: First the Process, Then the Results
    [read more]
  • August 2021 - The Challenge of Visualizing… For Some
    [read more]
  • July 2021 - Playing with both your feet and your hands
    [read more]
  • June 2021 - Finding the Range
    [read more]
  • May 2021 - The Focus
    [read more]
  • April 2021 - About Your Butt Cap
    [read more]
  • March 2021 - The Essential Forehand and Backhand
    [read more]
  • February 2021 - On Being a Doubles All-Courter
    [read more]
  • January 2021 - Same Grip Volleying Myths
    [read more]


  • December 2020 - On mechanics and style
    [read more]
  • November 2020 - THE BIG 3: The Glue That Keeps Your Best Game Together
    [read more]
  • September 2020 - Protocol and Game Tradition Revisited
    [read more]
  • August 2020 - As Good as Your 2nd Serve
    [read more]
  • July 2020 - Shot Shaping
    [read more]
  • June 2020 - Getting a Point in Jeopardy Back to Neutral
    [read more]
  • May 2020 - A Positive Mind-Set: On and Off the Court in Today's C-19 Reality
    [read more]
  • April 2020 - The Zombie Tennis Creed – Top Ten
    [read more]
  • March 2020 - A Roadmap Into "The Zone"
    [read more]
  • February 2020 - The service toss: myths and realities
    [read more]
  • January 2020 - Shot Gazing
    [read more]


  • December 2019 - The Dreaded High Bouncing Moonball Dilemma
    [read more]
  • November 2019 - Chalk Flew: Troublesome Line Calling without Hawkeye in Clubland [read more]
  • October 2019 - In the Spirit of Don't Drink and Drive… Don't Think and Hit [read more]
  • September 2019 - Old School vs New School [read more]
  • August 2019 - Getting the Ball Where You Want It [read more]
  • July 2019 - Taking Points Off…What? [read more]
  • June 2019 - Confidence Is Confidence: Take It Wherever You Can Get It [read more]
  • May 2019 - TENNIS INNOVATION IMPLODES [read more]
  • April 2019 - Defending the Court with Older Bones: A Club Player's Guide to Saying "Nice Shot" Less [read more]
  • March 2019 - Do You Have Doubles Rally Tolerance? [read more]
  • February 2019 - I Knew Jimy Van Alen: A Historical Look Back [read more]
  • January 2019 - The Mind is a Terrible Thing to Waste: Mental Toughness Skills [read more]


  • December 2018 - Less Bling is the Thing [read more]
  • November 2018 - Anatomy of a Doubles Serve Return…from the Inside Out [read more]
  • October 2018 - Older Dogs and New Tricks: Still Improving at Any Age [read more]
  • September 2018 - The All-Important Dynamic of Gripping [read more]
  • August 2018 - The Cinemascope Syndrome: Undermining Your Ball Watching [read more]
  • June 2018 - Serving and Returning Better with a Quiet Eye [read more]
  • May 2018 - The Man Who Breathed for Two [read more]
  • January 2018 - Rituals Anyone? [read more]


  • December 2017 - Why Serving is so Difficult in Clubland [read more]
  • October 2017 - Managing your body and mind in tennis space [read more]
  • August 2017 - Why Bother Breathing to Improve Your Game [read more]
  • May 2017 - The "Maintaining" One's Game as One Ages Fallacy [read more]
  • February 2017 - Punta Gorda Tennis Clubs: Setting the Bar [read more]
  • January 2017 - State of the Club Game: The Growing Death of Sportsmanship [read more]

Check back often for more essays.