Pass interference is one of the most difficult judgment calls a football official has to make. Milliseconds can separate an athletic play from a violation. Referee has pulled together the best thinking on the topic and presents you with the definitive guide to pass interference. You’ll understand the rule inside and out, learn the best angles and places to look so that you can make the right call at the right time, every time. Analysis is paired with high contrast PlayPic® graphics to accentuate your learning.