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Gamma

Professional 17

Nylon Gauge 17 1.27 mm In production

Lab measurements for Gamma Professional 17, 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

145lb/in

lower = softer, kinder on the arm

Tension loss

23%

lower = stays where you strung it

Energy return

92%

higher = livelier, more free power

Spin potential

2.8

higher = more spin off the string bed

Ball bite

0.393COF

higher = grabs the ball harder

Snapback

0.138COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 145 lb/in · 8th pct

Stiffer than 8% of strings tested — exceptionally soft and forgiving.

Tension loss 23 % · 30th pct

Sheds more tension than 30% of strings tested.

Energy return 92 % · 72nd pct

Livelier than 72% of strings tested.

Spin potential 2.8 · 7th pct

More spin potential than 7% of strings tested — minimal spin generation.

Ball bite 0.393 COF · 19th pct

Grips the ball harder than 19% of strings tested.

Snapback 0.138 COF · 90th pct

More string-on-string friction than 90% of strings tested — notches badly and stays put.

Strings that play like this

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

Gamma Professional 16 96% match Prince Premier W/Softflex 16 95% match Wilson Reaction 16 95% match Gamma Solace 16 (1.32) 94% match Pacific PMX 16L 94% match Wilson Sensation Supreme 16 93% match

More from Gamma

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 Professional 17 against 789 strings Find the right string for me