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Study on NFL refs, and when they call penalties. A study finds that ‘discretionary’ penalties such as holding and pass interference are three to five times more likely in the middle of games than at the beginning or end of games.
Study on NFL refs, and when they call penalties. A study finds that ‘discretionary’ penalties such as holding and pass interference are three to five times more likely in the middle of games than at the beginning or end of games.

