Methodology
We treat head size, weight, balance, string pattern, stiffness and string tension as a connected system. Recommendations use ranges because technique, strength, injury history and personal feedback vary.
Sources
We use public manufacturer specifications, frame markings, established sizing conventions and traceable specialist information. Tour associations compare manufacturer athlete pages and credible equipment reporting, while clearly separating a marketed retail line from a customised pro-stock frame.
Updates
Guides show a revision date. ATP and WTA information also has a reference date because rankings, paintjobs and sponsorships change.
Calculator limits
The grip calculator maps a hand measurement to the nearest common standard circumference. Handle shape, base grip and overgrip can alter the actual feel.