Strikeforce has bolstered its burgeoning middleweight division with an elite submission expert as two-time Brazilian jiu-jitsu world champion Ronaldo "Jacare" Souza has  signed a contract with the promotion and will look to debut in the fall, possibly at the same October event as the recently signed Fedor Emelianenko, according to Graciemag.com.

Souza (10-2) was originally rumored for another showdown with arch-nemesis, Jason "Mayhem" Miller, for the third time at next month's DREAM 11, but the status of that bout is now in doubt.

Souza defeated Miller in their first contest at DREAM 4. Their second bout, for DREAM's vacant middleweight title at DREAM 9 was ruled a no contest after Miller threw an illegal kick to a downed Souza.

"Jacare's" submission credentials speak for themselves. He placed second in the absolute division of the 2005 Abu Dhabi Combat Club world championships, losing only to Heavyweight prodigy Roger Gracie. He also dueled to a draw against former UFC heavyweight champion Randy Couture in a Professional Submission League grappling match.

Souza was knocked out in his first career fight by Jorge Patino at Jungle Fight 1 in September 2003, but he rebounded by putting together 10 straight wins, including 9 via submission. The streak would come to a halt at DREAM 6 however, courtesy of Gegard Mousasi in the promotion's Middleweight Grand Prix 2008 final.

With current Strikeforce middleweight champion Cung Le on hiatus from the sport due to busy making motion pictures, "Jacare" could be one of the fighters in contention to face Jake Shields for the interim middleweight title.