Jon Runyan Jr. of the Packers was fined $5,000 by his father.

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According to ESPN, Jon received a $5,215 punishment for leg-whipping an opponent during the game last week in London. 

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Like every NFL player, Runyan received a letter outlining the sentence and a warning.

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The letter was written by Runyan's father, NFL vice president of policy and rules administration.

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According to what Jon Jr. said to ESPN, father and son were well aware of the potential embarrassment.

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According to reports, the letter was signed "Sincerely Jon Runyan," making no mention of the relevant family dynamics.

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As evidence, the senior Runyan also fined Tom Brady, a former teammate.

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This shows that the senior Runyan hasn't let emotion influence his fines.

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