By Aki Mai. Tennis. Published at Wednesday, April 11th, 2018 - 07:28:39 AM.
ISOMETRIC: Larger sweet spot. Developed over 30 years ago the ISOMETRIC design increases the sweet spot by 7%* Compared to a conventional round frame a square-shaped ISOMETRIC racquet generates a larger sweet spot by optimizing intersecting main and cross strings.
“When I play-tested my new Burn racket with Countervail I could feel that my arm reacted better to it” said Kei Nishikori. “I feel I recover faster after practice and my arm and shoulder don't feel as tired while I am training. Best of all it didn't change the feel of racket which is really important to me. I am excited to use it on tour.”
Many will remember the rash of disastrous late and first-round withdrawals that plagued the slams especially the back-to-back opening-round mid-match retirements that occurred on Wimbledon Centre Court. It certainly did not paint the sport in a great light particularly when it unfolded at one of the most famous venues in all of sports. Thankfully the Grand Slam Board has come up with two changes to help greatly reduce the chances of such an ugly scenario happening again.
Two models in the 2017 Ultra line feature Countervail (CV) technology (the Ultra 100 CV and Ultra 105S CV) which is exclusive to Wilson performance rackets. CV is an integrated frame technology that minimizes vibration without sacrificing performance and feel. According to a University of Minnesota School of Kinesiology study** tennis players using a racket with CV experienced up to 30 percent less vibrational energy from the racket and as a result of less fatigue 40 percent more control over their shots. In addition to maximizing player energy CV shortens recovery time after matches.
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