The UFC made the bout official today for the August 28 event in Boston.
Both fighters are coming off of wins in the Octagon and will be looking to use one another as springboards into the upper crust of the 170 lb. division.
Diaz made his debut in the welterweight division on the heels of a split decision defeat to Gray Maynard at lightweight with an impressive first round TKO over Rory Markham at UFC 111, while “The Irish Hand Grenade” recently rebounded from consecutive defets at the hands of Dan Hardy and Ben Saunders with a second round TKO of Jonathan Goulet during UFC 113.
UFC 118 will be headlined by a lightweight title rematch between Frankie Edgar and B.J. Penn, while Randy Couture is expected to welcome James Toney to MMA in the co-headliner.