Bloody Elbow, for MMA and UFC news

In the first of two heavyweight quarterfinal Grand Prix match-ups on the Strikeforce: Overeem vs. Werdum main card, former UFC champion and PRIDE staple Josh Barnett (29-5) will square off against Strikeforce veteran Brett Rogers (11-2) on Saturday night at the American Airlines Center in Dallas, Texas.

We answer four burning questions for Saturday's Stikeforce: Diaz vs. Daley, one for each main card fight.

In the main event of the evening, current Strikeforce welterweight champion Nick Diaz (24-7-0-1) eyes his third title defense as he battles heavy-handed UFC veteran Paul Daley (27-9-2). Diaz won the strap back in January of last year with a dominant performance over DREAM champion Marius Zaromskis.