Strikeforce: "Overeem vs. Werdum" represents the second leg of the promotion's heavyweight grand prix tournament, commencing tomorrow night (June 18) from the American Airlines Center in Dallas, Texas.

In main card action, Chad Griggs looks to continue his Cinderella story by taking on well-traveled mixed martial arts veteran Valentijn Overeem.

"The Grave Digger" has buried his underdog streak and digs in as the -135 favorite.

That leaves "The Python" as a +105 underdog despite his experience in regional and international competition. Overeem is currently riding a three-fight win streak, having last defeated Ray Sefo via submission (neck crank) under the Strikeforce banner back in February.

Are the oddsmakers calling it like they see it? Or playing it safe? Take a look at how these two heavyweights stack up after the jump and decide for yourself.

265 lbs.: Chad "The Grave Digger" Griggs (10-1) vs. Valentijn "The Python" Overeem (29-25)

Backgrounds (last five fights):

Griggs:

Record: 5-0
Notable wins: Back-to-back upset wins over Bobby Lashley and Gian Villante
Notable losses: Hasn't been defeated since tapping to Shane Ott in 2007
Strengths: Heavy hands, go-for-broke style, a gamer
Weaknesses: Not the most technical fighter, untested on the ground

Overeem:

Record: 3-2
Notable wins: Won three in a row including a laugher against a husky Ray Sefo
Notable losses: Back-to-back losses (and finishes) in 2009
Strengths: The man has 29 wins with 28 finishes, be impressed
Weaknesses:  The man has 25 losses with 24 finishes, be impressed

Chad Griggs (-135) vs. Valentijn Overeem (+105) at Strikeforce: "Overeem vs. Werdum." Who ya' got and why?

For more MMA odds and betting lines for Strikeforce or to see how the numbers stack up for different events check out odds aggregate OddsShark by clicking here.