Frame-by-frame tests with the same strings, same tensions, and the same hands. Specs verified on a swingweight machine, not copied from manufacturer cards.
The Wilson Pro Staff 97 v13 is the first iteration in three generations that we'd hand to a control player without an apology — the removal of Countervail restores the frame's signature feedback, but…
Wilson refreshed its 97-square-inch flagship and made one decision that matters more than any of the marketing copy: they pulled Countervail out of the layup.