Name: Yonex Tournament 80 Spin 15L-16
Brand: Yonex

Measured values

Stiffness

162lb/in

lower = softer, kinder on the arm

Tension loss

22%

lower = stays where you strung it

Energy return

91%

higher = livelier, more free power

Spin potential

—

not measured

Ball bite

0.451COF

higher = grabs the ball harder

Snapback

—COF

not measured

How it ranks against all 789 strings

Stiffness 162 lb/in · 28th pct

Stiffer than 28% of strings tested.

Tension loss 22 % · 25th pct

Sheds more tension than 25% of strings tested.

Energy return 91 % · 65th pct

Livelier than 65% of strings tested.

Ball bite 0.451 COF · 56th pct

Grips the ball harder than 56% of strings tested.

Dynawire 16 (1.30) gauge 16
Mono Preme 16 (1.30) gauge 16
Poly Tour 130/16 gauge 16
Poly Tour Air 16L gauge 16L
Poly Tour Drive 16L (1.25) gauge 16L
Poly Tour Fire 16L (1.25) gauge 16L
Poly Tour HS 16 (1.30) gauge 16
Poly Tour HS 16L (1.25) gauge 16L
Poly Tour Pro 17 (1.20) gauge 17
Poly Tour Pro Yellow 16 (1.30) gauge 16
Poly Tour Pro Yellow 16L (1.25) gauge 16L
PolyTour REV 16 (1.30) gauge 16

Stiffness · lb/in

How much the string bed resists deflection. Higher plays firmer and more controlled; lower plays softer and easier on the arm.

Tension loss · %

Share of the reference tension the string sheds under a fixed test protocol. Lower means the bed stays where you strung it for longer.

Energy return · %

Share of impact energy handed back to the ball. Higher plays livelier and more powerful.

Spin potential

Ball friction divided by string-on-string friction. Higher means better bite with a cleaner snapback, so more spin.

Ball bite · COF

String-on-ball friction. Higher grabs the ball harder through the brush.

Snapback · COF

String-on-string friction. Lower lets the mains slide and snap back into place after impact.