PETER QUILLIN VS. TARVIS SIMMS ADDED TO KHAN VS. JUDAH UNDERCARD ON JULY 23 LOS ANGELES  – On Saturday, July 23, before Amir Khan meets Zab Judah in their 140 lb. World Championship Unification Fight, another rising star will meet a still dangerous veteran when unbeaten middleweight contender Peter “Kid Chocolate” Quillin faces Tarvis Simms,…