You want to talk about string? Fine. Let me tell you about string. I was standing on the Costanera Vuelta Fermoza last Tuesday, watching the river catch the afternoon light the way it does here in Formosa, Argentina, and a young club pro walked past carrying a fresh set of Volkl V-Pro 16g, still in the wrapper, and I nearly knocked the empanada right out of my own hand.
Because that packaging, that particular shade, took me straight back to 1987, semifinals on a clay court so red it looked like someone had bled all over it, and I hit a backhand cross-court winner that the line judge initially called out until the crowd — but I am getting ahead of myself. The string.
Let us talk about the string.
The Volkl V-Pro 16g is a monofilament polyester string, which means it is cut from a single continuous filament of co-polyester rather than twisted or braided into shape the way a multifilament is. That matters more than most recreational players understand.
A monofilament holds its shape under load.
It bites the ball, snaps back, and gives you that crisp, low-powered response that advanced players — aggressive baseliners, people who generate their own pace rather than borrowing the opponent's — genuinely need. In gauge terms you are looking at 16g, which in the real world of millimeters works out to approximately 1.30mm.
That is right in the middle of the poly range, firm enough to give you control and durability, not so thick that you lose all feel. A standard set runs to about 40 feet, which is enough to string one racquet comfortably, maybe a touch of string left over to remind you what you did with your Tuesday afternoon.
Now, I did my stringing research on a bench near the Plaza San Martín, which is a beautiful old square, very dignified, the kind of place that demands you sit up straight and think serious thoughts. I was thinking serious thoughts. I was thinking about tension.
With a co-poly like this you want to string it lower than you would a synthetic gut, because polyester does not give the way natural gut does, and if you string it tight you end up with a board instead of a racquet. The V-Pro rewards you when you respect that.
Drop it down, give it room, and the spin potential opens up in a way that frankly reminds me of the way my forehand opened up after I adjusted my grip in — it was the summer of 1989, I had just come back from a Fort Lauderdale themed cardiovascular tennis session that my trainer had arranged, conditioning work disguised as match play in the heat, and I came home with my legs under me and my hand looser on the handle and I won four straight tournaments.
Not relevant. The string.
Durability is where a co-poly earns its keep, and the V-Pro earns it honestly. Polyester resists notching better than softer strings, which means it holds its tension longer before the string bed goes dead on you. For a heavy hitter who is on the court three or four times a week, that is money.
For someone who strings once a year and wonders why everything feels strange, it is slightly wasted, because even the toughest poly eventually loses its resilience and needs to come out. String as often as you play per week, per year. That is the old rule. I learned it the hard way in 1991 when I showed up to the — but never mind that.
I brought the set with me when I visited the Museo Histórico Regional Juan Pablo Duffard, which is well worth an afternoon in Formosa. Standing in front of artifacts from another era, you feel the weight of things made to last, and this string has that same purposeful quality in the hand.
It is smooth to the touch, slightly waxy the way good co-poly is, and it feeds through the grommets cleanly.
The Catedral Nuestra Señora del Carmen is just a short walk from there, beautiful Spanish colonial lines, and I sat outside afterward turning the coil over in my fingers thinking about how something this simple — a strand of polymer — connects the player to the shot to the moment. It does not forgive. It does not pad your mistakes. It just tells the truth about what you did.
I have always respected that in a string and in an opponent. The V-Pro 16g is for players who are ready to hear the truth. If you are a 4.0 and above who swings hard and wants control over power, this is your answer. Everything else is just a match I won in 1994.
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