a double dot when warm. unfortunantly the double dot takes longer to warm up that a single dot, unless you have a microwave
red dot or blue dot are the bouncyest
There is a "double-yellow dot" ball currently used in the sport of squash.
Squash
Yellow
Yellow
The colour is yellow.
Squash
There are serveral different colours. A yellow dot is much slower then a blue dot. A double yellow dot is used in professional games. * yellow dot: Extra slow * white dot: Slow * Red dot: Medium * Blue dot: Fast
Pickle ball Squash
Wilson.
The sport is probably squash, although the ball doesn't have to be black.
In the traditional scoring system, a dot was used to indicate a ball whereby no run has been scored.
The diameter of a tennis ball is 2.63 inches, or 6.7 centimers. A squash ball's diameter is between 39.5 and 40.5 millimeters.