--> In this Pro Tips 4U sports training video, 5 time Pro Bowl Safety, Roy Williams shows you how to Jam The Receiver. Learn the secrets of proper footwork at the line of scrimmage, why you need to watch the receiver’s waist and why not to let any juking or faking fool you. Roy also shows you how to plant & stick the jam, how to get under the breastplate of the pads to move & control the receiver. You’ll also learn how not to let the receiver slap your hands and swim, plus how to fake a quick jam to throw the receiver off and proper footwork throughout.