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Wilson

Hollow Core Pro 16

Nylon Gauge 16 1.31 mm In production

Lab measurements for Wilson Hollow Core Pro 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

147lb/in

lower = softer, kinder on the arm

Tension loss

32%

lower = stays where you strung it

Energy return

91%

higher = livelier, more free power

Spin potential

2.2

higher = more spin off the string bed

Ball bite

0.417COF

higher = grabs the ball harder

Snapback

0.190COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 147 lb/in · 10th pct

Stiffer than 10% of strings tested — exceptionally soft and forgiving.

Tension loss 32 % · 51st pct

Sheds more tension than 51% of strings tested.

Energy return 91 % · 65th pct

Livelier than 65% of strings tested.

Spin potential 2.2 · 3rd pct

More spin potential than 3% of strings tested — minimal spin generation.

Ball bite 0.417 COF · 35th pct

Grips the ball harder than 35% of strings tested.

Snapback 0.190 COF · 97th pct

More string-on-string friction than 97% of strings tested — notches badly and stays put.

Strings that play like this

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

IsoSpeed Control Classic 16 97% match IsoSpeed Professional Classic 17 96% match Wilson Shock Shield 16 95% match Ashaway Dynamite 17 95% match IsoSpeed Axon Multi 16L 95% match Ashaway Dynamite Soft 17 94% match

More from Wilson

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 16 against 789 strings Find the right string for me