MaterialPolyesterMultifilamentNatural Gut
Should Tension Stay the Same When String Material Changes?
Polyester, multifilament, and natural gut do not feel or respond alike at the same 50 lb.
Player overview
Materials differ in elasticity, stiffness, and tension maintenance, so blindly copying the old number makes the comparison less useful.
Measurement guide
- Classify the old and new strings as polyester, multifilament, nylon, or natural gut.
- Choose a starting point for the material change within the manufacturer's guidance and the racquet's recommended range.
- For the first setup, change either gauge or tension—not both—and record the on-court result.
Latest measurement
After a material change, tension should become a new baseline rather than a copied number.
TENNIS TENSION LAB
Tension Lab: String Tension
Measure string tension, track every change, and plan your next restring.