Sports Authority Coupon: 20% Off 1 Item August 1, 2012 By: SMFMcommentShare The Savings! Sports Authority Coupon– As part of their Friends & Family Event, get 20% off 1 item at Sport Authority. Valid through August 4. Some exclusions apply. Click on â€œAdd to printable shopping listâ€ to print your coupon. Get Your Sports Authority Coupon Here!