| CPC A63B 39/00 (2013.01) [A63B 2039/006 (2013.01)] | 9 Claims |

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1. A biodegradable tennis ball comprising:
a core forming a hollow interior chamber, the core comprising a first blend of a rubber based material, a first petroleum based material, and a first biodegradable additive;
a felt layer overlaying a surface of the core, the felt layer comprising a second blend of a second petroleum based material and a second biodegradable additive; and
an adhesive adhering the felt layer to the core, wherein the biodegradable tennis ball is biodegradable based on blending of the first petroleum based material with the first biodegradable additive and based on blending of the second petroleum based material with the second biodegradable additive.
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