Top contender and former EliteXC champion Antonio "Big Foot'' Silva has recently been calling out the biggest names in the Strikeforce talent rich heavyweight division.

Silva won't yet get the fighters he's most often mentioned - most notably, Strikeforce champion Alistair Overeem or Fedor Emelianenko. But Silva gets perhaps the next best thing when he faces Alistair's older brother, Valentijn "The Python'' Overeem, in one of the principal bouts Saturday, Dec. 4, at Scottrade Center in St. Louis live on Showtime (10 p.m. ET/PT, delayed on the West Coast).

The important heavyweight matchup rounds out the televised portion of a solid fight card which features MMA superstar Dan Henderson (25-8), against former Strikeforce light heavyweight world champion Renato "Babalu" Sobral (36-8) in a collision of world-class 205-pounders in the main event.

In other fights, Paul "Semtex'' Daley (25-9-2), meets power puncher Scott "Hands Of Steel' Smith (17-7, 1 NC), in a battle of explosive welterweights (170 pounds), exciting local favorite "Ruthless" Robbie Lawler (17-6, 1 NC), takes on 2000 Olympic Games silver medalist Matt "The Law" Lindland (22-7) in a middleweight (185 pounds) scrap, and football legend and unbeaten MMA fighter, the remarkable Herschel Walker (1-0), will be opposed by an opponent to be determined.

The 6-foot-4, 31-year-old Silva (14-2) combines his freakish size with brute strength, startling speed. Factor in that he is also surprisingly nimble-footed and effectively combines Shotokan Karate and Brazilian Jiu-Jitsu, and you seemingly have all of the ingredients of a top contender.

Silva has won seven of his last eight fights, including a decisive, lopsided decision over former UFC heavyweight champion Andrei "The Pitbull" Arlovski in his most recent outing last May 15. Silva's lone loss since December 2006 came when he was narrowly outpointed by fellow Brazilian, and Fedor conqueror, Fabricio Werdum, on Nov.7, 2009. After an early onslaught that included decking Werdum and having him in serious trouble, Werdum rallied to eke out a decision.

"I want to fight and I'll fight whoever they put in front of me,'' Silva said. "My goal is to be the best and fight for a world title.''

Overeem (28-23)  is a dangerous striker who has won his last two fights in a combined time of 47 seconds. The 6-foot-3, 34-year-old Dutch Destroyer scored a 40-second KO (knee) over Catalin Zmarandescu last May 21. In his outing before last, the previous April 17, a head kick finished off Tengiz Tedoradze seven seconds after the opening bell.

Overeem has several notable victories, including a 0:56, first-round submission over all-time great Randy "The Natural" Couture and a 2:19, first-round submission over Sobral. Overeem has only gone the distance twice in a 53-fight career.

A member of Team Golden Glory like his brother, Overeem is a four-time winner in PRIDE Fighting Championship competition. He'll be making his debut for Strikeforce after signing with the San Jose, Calif.-based promotion in June.