The only valid coupon that I can find has already been mentioned: 10% off $100 or more until 9/30/06. There are also a bunch of Free Shipping offers. I found these Sports Authority coupons / deals at: http://www.couponheaven.com/merchant.cfm/thesportsauthority
If I understand your question correctly, you are looking for the actual coupon code to enter at checkout? I'm not sure they do that anymore. The only coupon deals I've been able to find for SportsAuthority.com have been available when you click on a link.
There are a lot of restrictions on these coupons. If you go to CouponHeaven.com, you will see the details / restrictions when you click to redeem the coupon offer.
Popular Dick's coupons include free shipping and there are often sales with discounts on particular types of clothes or equipment..Apply the Dick's Sporting Goods coupon code to enter it in the "Promotion Code" box on the shopping cart page to get your discount. Aug 27 - Sep 2