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            . When tennis started to be televised in color in the late 1960s, it was hard for viewers to track the ball on their screens, so the ITF came up with the bright greenish-yellow to make it easier on their eyes.

            They're rare today, but according to ITF , white tennis balls are technically still allowed—a relic of pre-TV times.

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            Anonymous
            3 hours ago

            because

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            Anonymous
            20 hours ago

            don't know

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            Anonymous
            1 day ago

            They are green so people can actually see them on TVs and so they just pop out when playing a game of tennis

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            Anonymous
            18 hours ago

            11

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            Wiki User
            May 24, 2012 8:46AM

            Because they r