Strikeforce is all set to pull the trigger on its final fight card of 2011, as the promotion will hit the Valley View Casino Center in San Diego, Calif., tomorrow night (Sat., Dec. 17, 2011) with "Melendez vs. Masvidal."

The event is headlined by a lightweight championship throwdown pitting the new face of the organization, Gilbert Melendez, putting his title up for grabs against a very "Gamebred" Jorge Masvidal.

The two made it official today by hitting their 155-pound mark.

Another championship is being contested in the co-main event, as Cristiane Santos makes her long awaited return to the cage to defend the women's 145-pound title against Hiroko Yamanaka.

A main card photo gallery (via Strikeforce.com) is after the jump. For complete Strikeforce: "Melendez vs. Masvidal" weigh-in results click here.

145 lbs.: Cyborg Santos vs. Hiroko Yamanaka

155 lbs.: KJ Noons vs. Billy Evangelista

205 lbs.: Gegard Mousasi vs. Ovince St. Preux