Head to head

Dunlop S-Gut 17 vs Gamma Professional Spin 16

S-Gut 17 leads on 5 of 6 measurements. The widest gap is tension loss, where S-Gut 17 is 8 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Dunlop

S-Gut 17

Nylon/Polyurethane · 17 ga

Gamma

Professional Spin 16

Nylon/Zyex · 16 ga

Stiffness lower = softer, kinder on the arm
16330th pct
16533rd pct
Tension loss lower = stays where you strung it
2123rd pct
2431st pct
Energy return higher = livelier, more free power
9490th pct
9493rd pct
Spin potential higher = more spin off the string bed
3.111th pct
2.76th pct
Ball bite higher = grabs the ball harder
0.40627th pct
0.39520th pct
String friction lower = strings slide and snap back
0.12987th pct
0.14993rd pct

Bars are percentile against all 791 strings, and the marked side is the one that measures better, which is not always the one you want. A firmer bed is worse for your elbow and better for your control, and no measurement knows which of those you came for.

Which one wins, by problem

Each string's standing on the site's rankings, out of every measured string in the database. This is where a comparison stops being arithmetic and starts being a decision.

Swapping between them: what tension?

Bed stiffness is published at one reference tension, so the only honest conversion is to scale it. These are starting points from 52 lb, not prescriptions. The calculator takes your own tension.

Coming from S-Gut 17 at 52 lb

String Professional Spin 16 at 51.4 lb 23.3 kg

Coming from Professional Spin 16 at 52 lb

String S-Gut 17 at 52.5 lb 23.8 kg

Hybrid: what if you used both?

Estimated, not measured. No hybrid combination has been tested as a bed. These figures are the two strings' own lab measurements weighted by how much of the bed each one actually is. Treat them as a guide to which way a pairing moves, never as lab data.

S-Gut 17 mains / Professional Spin 16 crosses

Stiffness31st pct · 1 measured
Tension loss26th pct · 1 measured
Energy return91st pct · 1 measured
Spin potential10th pct · 1 measured
Ball bite26th pct · 1 measured
String friction89th pct · 1 measured

Professional Spin 16 mains / S-Gut 17 crosses

Stiffness31st pct · 1 measured
Tension loss29th pct · 1 measured
Energy return92nd pct · 1 measured
Spin potential7th pct · 1 measured
Ball bite21st pct · 1 measured
String friction92nd pct · 1 measured

Open this in the hybrid builder

Which goes dead first?

Estimated from tension loss, which is the only thing the database measures about ageing. This is when the bed stops playing the way you strung it, not when the string breaks.

S-Gut 17

~33 hours of play

Professional Spin 16

~31 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Dunlop S-Gut 17 Nylon/Polyurethane17$5.4916321943.10.4060.129
Gamma Professional Spin 16 Nylon/Zyex16find16524942.70.3950.149

Add a third string S-Gut 17 in full Professional Spin 16 in full