Wilson

Hollow Core Pro 17

Nylon Gauge 17 1.30 mm In production

Lab measurements for Wilson Hollow Core Pro 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

150lb/in

lower = softer, kinder on the arm

Tension loss

34%

lower = stays where you strung it

Energy return

91%

higher = livelier, more free power

Spin potential

3.9

higher = more spin off the string bed

Ball bite

0.515COF

higher = grabs the ball harder

Snapback

0.133COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 150 lb/in · 13th pct

Stiffer than 13% of strings tested.

Tension loss 34 % · 55th pct

Sheds more tension than 55% of strings tested.

Energy return 91 % · 65th pct

Livelier than 65% of strings tested.

Spin potential 3.9 · 27th pct

More spin potential than 27% of strings tested.

Ball bite 0.515 COF · 83rd pct

Grips the ball harder than 83% of strings tested.

Snapback 0.133 COF · 89th pct

More string-on-string friction than 89% of strings tested.

Strings that play like this

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

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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 Hollow Core Pro 17 against 789 strings Find the right string for me