http://mlb.mlb.com/sponsors/dominos/dominono/index.jsp – On the first (1st) business day following a No-Hitter, Eligible Fans must go to MLB.com/dominono beginning at 12:00 pm (noon) PDT and while supplies last and register by submitting his/her MLB.com username and password. 

There was a no hitter, so you can get a promo code for a free medium 2 topping pizza at Domino’s. You must have an MLB.com account, so make sure you register before it goes live at 3PM eastern on Tuesday, September 2.