By FCF Staff

Alistair Overeem avenged his 2006 submission loss to Fabricio Werdum tonight in Dallas, Texas, by working his way to a unanimous decision win over the renowned submission artist. Two of the three judges scored all three rounds in the Strikeforce heavyweight champion’s favor, while one judge awarded a frame to Werdum.

With the win Overeem advances to the semi-finals of Strikeforce’s World Heavyweight Grand-Prix and will face Antonio Silva.

In the tourney’s other quarterfinal bout, Josh Barnett made the most of his North American return by tapping out Brett Rogers with a second round arm-triangle-choke. The former UFC heavyweight champ will meet fellow Pride vet Sergei Kharitonov next.

Here are the results from tonight’s “Overeem vs. Werdum” event.

Alistair Overeem def. Fabricio Werdum via unanimous decision (29-28, 30-27, 30-27)

Josh Barnett def. Brett Rogers via submission  (arm-triangle choke) – R2, 1:17

Jorge Masvidal def. K.J. Noons via unanimous decision (30-27, 30-27, 30-27)

Daniel Cormier def. Jeff Monson via unanimous decision (30-27, 30-27, 30-27)

Chad Griggs def. Valentijn Overeem via TKO (punches) – R1, 2:08

Justin Wilcox vs. “JZ” Cavalcante ruled a no-decision (accidental eyepoke to Wilcox) – R2, 0:31

Conor Heun def. Magno Almeida via unanimous decision (29-28, 29-28, 29-28)

Nah-Shon Burrell def. Joe Ray via unanimous decision (29-28, 29-28, 29-28)

Isaac Vallie-Flagg def. Brian Melancon via split-decision (28-29, 29-28, 29-28)

Todd Moore def. Mike Bronzoulis via unanimous decision (29-28, 29-28, 29-28)