In a recent column in Tennis Industry Magazine on the problems with poly-based strings, USRSA Executive Director Bob Patterson said, "Not only is poly string wrong for most recreational and junior players, it can be harmful." He noted that while top pros may be able to get more spin with poly strings, most recreational players cannot. What they do get is less power from the strings and increased shock to their arms and joints, often resulting in injury. But his main point in the article is that this is a common problem, well-known within the racquet stringing community, and one that we all need to address. In fact, his title for the piece is, "Collaborative Effort: When it comes to poly strings, we all need to make sure adult recreational players and juniors know the facts."
We couldn't agree more, of course. We have also written a number of columns about the problems with poly, and how the alternatives, such as the PEEK polymers used in our MonoGutTM ZX series, can generate as much, if not more spin than poly, but without the risks.
PEEK polymers - the best known of which is Zyex®, which we use in a number of strings, including MonoGut ZX and ZX Pro - have a number of properties which make them well suited for racket strings and, we believe, a better option than polyester. These properties include low dynamic stiffness and a low coefficient of friction. These combine to allow the strings to easily slide across each other and snap back forcefully, generating spin. The same ability to stretch and snap back forcefully generates shot power, which polyester does not do, and increases 'dwell time' of the ball on the strings, enhancing control. Finally, PEEK has an excellent ability to retain tension longer than other materials (polyester does not), increasing the playing life of the string.
Our good friend, Master Racquet Technician John Gugel is also adamant about the problems with poly string - especially for junior players - and has even been known to decline to string racquets for juniors with poly string.
Master Racquet Technician John Gugel is adamant about the problems with poly string - especially for junior players - and has even been known to decline to string racquets for juniors with poly string. He says it is the job of a racquet technician to advise his or her clients on proper string choice - whatever the string - and that doing so is good for business.