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Tourna

Black Zone 16

Polyester Gauge 16 1.30 mm In production

Lab measurements for Tourna Black Zone 16, ranked against all 789 strings in the database. Every figure below is a testing-machine result at a fixed reference tension, not a playtest opinion.

Measured values

Stiffness

197lb/in

lower = softer, kinder on the arm

Tension loss

30%

lower = stays where you strung it

Energy return

88%

higher = livelier, more free power

Spin potential

5.6

higher = more spin off the string bed

Ball bite

0.417COF

higher = grabs the ball harder

Snapback

0.075COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 197 lb/in · 65th pct

Stiffer than 65% of strings tested.

Tension loss 30 % · 47th pct

Sheds more tension than 47% of strings tested.

Energy return 88 % · 48th pct

Livelier than 48% of strings tested.

Spin potential 5.6 · 71st pct

More spin potential than 71% of strings tested.

Ball bite 0.417 COF · 35th pct

Grips the ball harder than 35% of strings tested.

Snapback 0.075 COF · 13th pct

More string-on-string friction than 13% of strings tested.

Strings that play like this

Closest matches across stiffness, tension loss, energy return and spin potential.

Yonex Poly Tour HS 16L (1.25) 98% match Solinco Tour Bite Soft 16L (1.25) 96% match Gamma IO 17 (1.23) 95% match Signum Pro Poly Plasma 17 (1.23) 94% match Topspin Cyber Delta 17 (1.26) 94% match Topspin Cyber Whirl 17 (1.24) 94% match

More from Tourna

What these numbers mean

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.

Compare Black Zone 16 against 789 strings Find the right string for me