Ronaldo Jacare Souza

Strikeforce serves up two title fights rounded out by a likely slugfest between lightweight contenders and squash matches featuring budding heavyweight stars.

The lightweights plan to put on a show and establish themselves as the number one contender for Gilbert Melendez' strap.

Strikeforce will determine its new 185-pound champion live on Showtime Sat., Aug. 21 at the Toyota Center in Houston.