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Ken Aston

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Ken Aston was a soccer referee. He helped make the game better. He made the red and yellow cards.

These cards help players see the rules. He thought of the colors like traffic lights.

A yellow card is a warning. A red card means a player must leave. He also made the flags for linesmen. He used bright colors so they could be seen in fog. He loved to teach new referees how to work.

He was a very important leader in soccer.

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