Beschreibung
Fun Sport Fact:
The yellow tennis ball wasn’t always yellow.
Before 1972, tennis balls were white or black, depending on the court color. The switch to optic yellow happened because research by the BBC showed that yellow balls were much easier to see on color television, which was becoming popular at the time.
Included you will find:
5x7
6x8
7x9
8x10
9x12
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