Federer's own spec. The layup story here is the one that is actually old and true: braided graphite + aramid, the weave Wilson has built Pro Staffs from since St. Vincent — slow-filtered, muted, expensive feel. Add a leather grip and 340 g of unapologetic mass. No gimmick needed; the gimmick is that there is no gimmick.
Compare these frames in the finder →All 1 current WILSON PRO STAFF RF97 model, with unstrung weight, head size, string pattern, stiffness (RA), swingweight, balance and beam width, followed by the eleven playing axes rated 0–10 and a difficulty rating.
| Model | Weight | Head | Pattern | Stiffness | Swingweight | Balance | Beam | Ctrl | Prec | Spin | Pwr | Feel | Stab | Man | Serve | Smsh | Slice | Ret | Diff |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pro Staff RF97 Autograph | 340g | 97 | 16x19 | 68 RA | 335 | 315 | 21.5 | 8 | 8 | 6 | 7 | 8 | 10 | 3 | 9 | 9 | 8 | 8 | 10 |
Swipe the table sideways for the remaining columns.
Axes, in order: Control (flat) · Precision · Spin · Power · Feel / comfort · Stability · Maneuverability · Serve · Smash & overhead · Slice / touch · Return / blocking. Difficulty is how demanding the frame is to use well, not how good it is.
An unapologetically heavy, head-light control frame. The mass is the point: it goes through the ball without deflecting and it turns your own swing speed into pace and depth, but it gives you almost nothing for free. Feel is dense and muted — the classic Pro Staff response. Devastating when you are set and early, brutal when you are late or stretched. Fitness is part of the spec sheet.
Frames in one family share a construction story but not a playing character — head size, pattern and swingweight move the numbers above far more than the marketing does. If you want a shortlist matched to how you actually play, and a string bed matched to the frame, the finder does that in a few taps.