One source
Every number comes from the Tennis Warehouse University racquet comparison database, pulled , which holds the TWU lab's strung measurements for each frame. The index uses only the ten fields it holds for every racquet here, which are head size, length, weight, balance, swingweight, flex, twistweight, vibration frequency, power and sweet zone. Details that other sites list for some frames but not all, such as string pattern, beam width and unstrung weight, are left out so every frame is compared on the same footing.
Materials and pros
The materials and the pros using each frame come from its Tennis Warehouse product page, or Tennis Warehouse Europe where the US page has gone, exactly as listed there. They appear only in the Differences cards and never feed the numbers, classes or filters. Frames with no product page on either site show neither, rather than borrowing from a sibling model. That applies to 18 frames, including the Percept, Pro Staff v14 and TFight ISO lines.
Which frames
Every racquet from the nine brands that TWU marks as current, newest generation of each line, released from 2023 onward, with its Team, Lite, Plus, Tour and weight variants. Names are TWU's own, including the year or version where TWU gives one. The Prince O3 Legacy 120 is left out on purpose, as a 120 in² frame far outside the rest of the index.
Gaps
A few current frames are not in TWU's database yet, for example the Wilson Ultra 100 v5, the Head Boom 2026 and the Tecnifibre TF40 2024. They are left out rather than filled from other sources, and will join when TWU adds them. Two TWU entries carry an obvious typo that is corrected here. "Pure Stike 98 18x20" reads as Pure Strike, and the Phantom 100X 305g 2024 is listed at 23 in long, shown as 27 in like every other Phantom 100X.
Conversions
Balance points = (length ÷ 2 − balance in inches) × 8, from TWU's strung balance in centimetres. One point is 1/8 in, about 3.2 mm. Negative points are head-heavy (HH). Ounces and square centimetres are straight unit conversions.
Classes
Weight classes use strung weight, running Ultralight under 290 g, Light 290 to 305 g, Standard 306 to 320 g, Tour 321 to 330 g and Heavy over 330 g. Swingweight bands follow Tennis Warehouse's buying guide, with low below about 310, medium 310 to 325 and high above 325. Stiffness bands follow the grades on its lab sheets, with 63 and below low, 64 to 66 medium and 67 and up high. Head sizes follow the usual mid, midplus and oversize split. Twistweight, vibration, power and sweet zone are split into rough thirds of this index.
Tolerances
Frames vary between production runs, so no two of a model are identical. Wilson, for example, quotes ±5 g weight, ±7.5 mm balance and ±10 swingweight for the Ultra 100 v5. Treat a gap of two or three swingweight points as noise.
Drawings
Each head is drawn as an oval with the frame's head area, and the tinted zone inside it has the area of TWU's sweet zone. Length and balance point are to scale. The outline is not traced from the mould.