Tyron Woodley submitted Rudy Bears in the first round of their matchup on Friday with arm triangle to maintain his undefeated record in the main event of Strikeforce Challengers 5, which took place at Memorial Hall in Kansas City, Kansas.

Also on the Showtime televised main card, Strikeforce newcomer Kerry Vera earned a first round TKO victory over Kim Couture, Bobby Voekler weathered an early storm to defeat Erik Apple with a second round TKO, Rafael “Feijao” Cavalcante bounced back from his previous loss, defeating Aaron Rosa via second round TKO, and Kevin Casey submitted Chad Vance in the opening round.

All 22 fighters who will be in action at Friday’s Strikeforce Challengers 5: Woodley vs. Bears event hit the scales today to weigh-in for their bouts, with the entire Showtime-televised main card, including headliners Tyron Woodley and Rudy Bears and notables Kim Couture and Kerry Vera, successfully making weight.

The event takes place at the Memorial Hall in Kansas City, Kansas and airs live on Showtime at 11pm ET (delayed on west coast).

Strikeforce heavyweight champ Alistair Overeem, who has yet to fight again for the promotion since winning the title in November 2007, returned to MMA action overseas over the weekend, dominating Tony Sylvester at Ultimate Glory 11 in Amsterdam, Netherlands before finishing the fight with a guillotine choke in just 83-seconds. Overeem will fight again this weekend at DREAM 12 against James Thomson before he’s expected to return to Strikeforce to defend the title.

Read about the latest Strikeforce news after the jump, including additions to “Fedor vs. Rogers”, the main card for Strikeforce Challengers 5, and more.

Strikeforce announced on Saturday that it will hold a Showtime-televised “Challengers” event on November 20 at the Memorial Hall in Kansas City, Kansas in conjunction with the Combat Sports Championships and X-Fights promotions.

In other Strikeforce news, heavyweight contender Fabricio Werdum has been added to the lineup for the promotion’s November 7 CBS-televised event headlined by Fedor Emelianenko vs. Brett Rogers, but his opponent has not yet been announced.

UFC middleweight champ Anderson Silva will undergo elbow surgery after all to remove bone spurs and will be sidelined briefly, Mirko “Cro Cop” Filipovic is not retiring following his latest loss and intends to fight at least once more, at a November 7 Strikforce event headlined by Fedor Emelianenko vs. Brett Rogers will take place at the Sears Centre near Chicago.

Read about the latest MMA news in MMAFrenzy.com’s Quick Hits…

Omar De La Cruz and Lyman Good advanced to the Bellator welterweight finals with victories on Friday at Bellator 7 in Chicago. In other action, Eddie Sanchez provided the promotion another highlight reel clip with a ten-second TKO while Kerry Vera and Leslie Smith engaged in an entertaining slugfest.

Weigh-ins for ShoMMA: Strikeforce Challengers 1, Bellator 7, and MFC 21: Hard Knocks took place on Thursday ahead of tonight's fight cards. Complete weigh-in results, which include notables Bobby Lashley, Trevor Prangley, and Billy Evangelista, are available after the jump.

Jon Fitch has signed a five-fight extension with the UFC, Bellator has announced the complete lineups for its first three events, Kendall Grove and Matt Riddle vs. Dan Cramer have been added to UFC 101, and more...