StringSpec
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Head to head

MSV Focus Evo 16 vs Pacific Poly Force Xtreme 16L

Poly Force Xtreme 16L leads on 4 of 6 measurements. The widest gap is ball bite, where Poly Force Xtreme 16L is 53 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

MSV

Focus Evo 16

Polyester · 16 ga

Pacific

Poly Force Xtreme 16L

Polyester · 16L ga

Stiffness lower = softer, kinder on the arm
22692nd pct
21886th pct
Tension loss lower = stays where you strung it
4475th pct
4067th pct
Energy return higher = livelier, more free power
8519th pct
8415th pct
Spin potential higher = more spin off the string bed
4.954th pct
5.056th pct
Ball bite higher = grabs the ball harder
0.39420th pct
0.48873rd pct
String friction lower = strings slide and snap back
0.08024th pct
0.09861st 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 Focus Evo 16 at 52 lb

String Poly Force Xtreme 16L at 58.1 lb 26.4 kg

Coming from Poly Force Xtreme 16L at 52 lb

String Focus Evo 16 at 47.1 lb 21.4 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.

Focus Evo 16 mains / Poly Force Xtreme 16L crosses

Stiffness90th pct · 1 measured
Tension loss72nd pct · 1 measured
Energy return17th pct · 1 measured
Spin potential55th pct · 1 measured
Ball bite28th pct · 1 measured
String friction33rd pct · 1 measured

Poly Force Xtreme 16L mains / Focus Evo 16 crosses

Stiffness89th pct · 1 measured
Tension loss69th pct · 1 measured
Energy return16th pct · 1 measured
Spin potential55th pct · 1 measured
Ball bite67th pct · 1 measured
String friction53rd 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.

Focus Evo 16

~17 hours of play

Poly Force Xtreme 16L

~20 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
MSV Focus Evo 16 Polyester16find22644854.90.3940.080
Pacific Poly Force Xtreme 16L Polyester16Lfind21840845.00.4880.098

Add a third string Focus Evo 16 in full Poly Force Xtreme 16L in full