Strikeforce: Heavy Artillery

World Heavyweight Champion Alistair ""The Demolition Man"" Overeem (32-11) will make his highly anticipated return to action against heavy-handed knockout artist Brett ""The Grim"" Rogers (10-1) in the main event of a STRIKEFORCE mixed martial arts (MMA) extravaganza at Scottrade Center in St. Louis, Mo., on Saturday, May 15. In another heavyweight confrontation, Andrei ""The Pitbull"" Arlovski (15-7) will clash with Antonio ""Big Foot"" Silva (13-2).