Wow, that doesn't go on West Coast cement at all.
Wilson's are the lightest and most air, least knapp, bouncing highest regardless of court surface.
Penn's have more knapp, some are heavier.
Dunlops are what some guys here call "dunrocks", the most knapp, the heaviest, and moderate air pressure.
Tretorns are the rock, bounce the least, are the heaviest.
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