Most commercially available racquetballs are made of rubber but it is not officially stated in the USA Racquetball Rules that it must be made out of a certain substance. As long as it meets the size requirements and functions correctly, it can be made out of a variety of substances.
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no, a sphere is a ball.
Ball splitter
The answer to this question depends which sport are we talking about. The range of materials can range from natural, man made or composite.
Some are plastic, most are a resin type material.
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