is about the mixed martial arts promotion . for other uses of strikeforce and strike force see strike force . strikeforce former type private industry mixed martial arts promotion successor ultimate fighting championship founded 1985 kickboxing 2006 mma founder scott coker defunct january 12 2013 headquarters san jose california united states website www.strikeforce.com strikeforce was an american mixed martial arts and kickboxing organization based in san jose california which operated from 1985 to 2013 . it was headed by ceo scott coker . its live events and competitions have been shown on cbs debut on november 7 2009 and showtime in the united states super channel in canada primetime in the united kingdom sky perfectv in japan hbo plus in brazil space in latin america and the caribbean and on the american forces network . in early 2011 strikeforce was purchased by american ultimate fighting championship owner zuffa llc which eventually closed the promotion and brought the remaining fighter contracts into the ufc roster . the acquisition has since further solidified the ufc s status as the premier mixed martial arts promotion in the world . contents 1 history 1.1 arrival of fedor emelianenko 1.2 purchase by zuffa llc 2 rules 2.1 weight divisions 2.2 judging criteria 2.3 match conduct 3 strikeforce events 4 strikeforce grand prix 5 final champions 6 strikeforce records 7 in other media 7.1 video games 7.2 action figures 8 see also 9 references 10 external links history edit strikeforce challengers 13 in nashville tennessee founded as a kickboxing organization strikeforce later became the number two mixed martial arts promotion in the world . its first mma event strikeforce shamrock vs. gracie was held on march 10 2006 at the hp pavilion in san jose california . 1 the event was california s first regulated mma event and broke the previous record for largest audience at a mma event in north america with its 18 265 in attendance . the record was since broken by ufc 129 . in february 2008 strikeforce held its first event outside california with strikeforce at the dome at the tacoma dome in tacoma washington . starting in 2009 most strikeforce events were held in other states 15 in total including 5 events in las vegas nevada from 2011 2012 . in march 2008 strikeforce partnered with nbc to broadcast weekly highlight and fighter profile series strikeforce on nbc from april 12 . 2 in february 2009 strikeforce purchased several assets including a video library and several fighter contracts including nick diaz jake shields robbie lawler and scott smith from proelite owner of the defunct elitexc promotion . days later it also announced it had agreed to a three year broadcast deal with showtime for up to 16 events per year as well as a deal with cbs for an option to produce up to four events for them . 3 in addition to strikeforce s primary events being broadcast on showtime it also announced it would produce shomma strikeforce challengers an event series similar to shoxc and shobox where they would highlight up and coming fighters . 4 during august 2009 strikeforce ceo scott coker announced that they had signed formal alliances with japanese mma promotion dream and russian promotion m 1 global . coker said the partnership would allow for co promotion and fighter exchanges for events both in the us and japan to creating the best match ups possible that would not have existed before . 5 as a result dream fighters such as shinya aoki tatsuya kawajiri sergei kharitonov melvin manhoef jason miller gegard mousasi ronaldo souza hiroyuki takaya and marius zaromskis compete for strikeforce between 2009 & the partnership s end in 2011 . on august 15 2009 strikeforce was available to be viewed online through the showtime website . for a small cost an online interactive event named strikeforce all access could be streamed simultaneously with the live event enabling the user multiple camera angles of the fights such as the cage cam exclusively offered by showtime . a small camera was attached to the referee and fans were able to see from their perspective in real time . strikeforce all access added other features such as pause and instant replay . this was not the first time strikeforce events were streamed on the showtime website but was the first time the live stream was available to audiences and internet users outside the united states . 6 strikeforce had major sponsorship deals with rockstar energy drink electronic arts bodog and full tilt poker . arrival of fedor emelianenko edit on august 3 2009 former pride and reigning wamma heavyweight champion fedor emelianenko signed a 3 fight contract with strikeforce with events he competed on co promoted by his promotional team m 1 global . 7 on november 7 2009 he made his strikeforce debut at strikeforce fedor vs. rogers on the promotion s first nationally televised card on cbs . emelianenko faced brett rogers and won via knockout in the 2nd round . emelianenko proved to be a huge rating draw bringing in just under 5.5 million viewers . 8 emelianenko s next fight was at strikeforce fedor vs. werdum where he suffered his first loss in 10 years to fabr cio werdum via submission . emelianenko next fought as part of the strikeforce heavyweight world grand prix tournament 9 losing again to ant nio silva via doctor stoppage . emelianenko was battered by silva during the second round causing his right eye to swell shut . 10 after exiting the tournament emelianenko last competed against strikeforce light heavyweight champion dan henderson in a heavyweight superfight losing via first round knockout . after the loss emelianenko left the promotion to finish his career overseas . despite his 3 fight losing streak to end his strikeforce run all of his appearances for the promotion attracted over 500 000 viewers among the highest ratings in strikeforce s history . 11 purchase by zuffa llc edit on march 12 2011 dana white revealed on aol to ariel helwani that zuffa llc the parent company of the ufc had purchased strikeforce . 12 white went on to explain that strikeforce will operate as an independent promotion and that scott coker will continue to run the promotion . strikeforce ceo scott coker announced the return of fedor emelianenko on an unspecified july or august event and said that zuffa owned company would continue to co promote with m 1 global . 13 following the purchase the ufc signed many of strikeforce s top stars and champions such as jason miller nick diaz dan henderson alistair overeem luke rockhold daniel cormier and cung le . under zuffa s ownership strikeforce made minor changes including adopting the unified rules of mixed martial arts in full closing the promotion s men s weight classes below lightweight and ceasing promotion of amateur undercard bouts . after an extension was reached to continue strikeforce through 2012 the promotion s heavyweight division sans heavyweight grand prix finalists was merged into the ufc and the promotion s challengers series was ended . the final strikeforce show was strikeforce marquardt vs. saffiedine on january 12 2013 after which the promotion was dissolved and all fighter contracts were either ended or absorbed into the ufc . rules edit two fighters get ready prior to their bout at the time of its closure strikeforce employed the unified rules of mixed martial arts and was fought on a hexagonal cage as opposed to ufc s octagonal cage the octagon . ordinary matches consisted of three five minute rounds while championship matches were five five minute rounds . all rounds had a one minute break between them . prior to the acquisition by zuffa strikeforce did not allow elbows to the head of a grounded opponent . prior to june 2009 all women s bouts in strikeforce consisted of three three minute rounds as opposed to the men s five minute rounds . however on june 16 2009 strikeforce announced that it had received approval from the washington and california state athletic commissions to use five minute rounds for all women s bouts including five five minute rounds for its championship bouts . 14 weight divisions edit see also mixed martial arts weight classes weight class name upper limit in pounds lb in kilograms kg bantamweight 135 61.2 featherweight 145 65.8 lightweight 155 70.3 welterweight 170 77.1 middleweight 185 83.9 light heavyweight 205 93.0 heavyweight 265 120.2 women s weight class name upper limit in pounds lb in kilograms kg bantamweight 135 61.2 featherweight 145 65.8 judging criteria edit the ten point must system was in effect for all fights ; three judges scored each round and the winner of each received ten points the loser nine points or fewer . if the round was even both fighters received ten points . in new jersey the fewest points a fighter could receive was 7 and in other states by custom no fighter received fewer than 8 . match conduct edit after a verbal warning the referee could stop the fighters and stand them up if they reached a stalemate on the ground where neither are in a dominant position or working towards one . this rule is codified in nevada as the stand up rule . if the referee paused the match it was resumed with the fighters in their prior positions . grabbing the cage brought a verbal warning followed by an attempt by the referee to release the grab by pulling on the grabbing hand . if that attempt failed or if the fighter continued to hold the cage the referee could charge a foul . under unified rules antics were permitted before events to add to excitement and allow fighters to express themselves but abusive language during combat was prohibited . strikeforce events edit main article list of strikeforce events as of strikeforce marquardt vs. saffiedine which occurred on january 12 2013 there have been 63 strikeforce events held including 20 in the promotion s challengers series . strikeforce grand prix edit strikeforce held tournaments in the men s heavyweight division from 2011 2012 and one night tournaments in the men s middleweight divisions in november 2007 and the women s bantamweight division in august 2010 . they were won respectively by daniel cormier jorge santiago and miesha tate . final champions edit main article list of strikeforce champions men s division upper weight limit champion heavyweight 265 lb 120 kg ; 18.9 st alistair overeem light heavyweight 205 lb 93 kg ; 14.6 st dan henderson middleweight 185 lb 84 kg ; 13.2 st luke rockhold welterweight 170 lb 77 kg ; 12 st tarec saffiedine lightweight 155 lb 70 kg ; 11.1 st gilbert melendez women s division upper weight limit champion featherweight 145 lb 66 kg ; 10.4 st cristiane santos bantamweight 135 lb 61 kg ; 9.6 st ronda rousey strikeforce records edit main article list of ufc records record fighter number most bouts josh thomson 13 most wins josh thomson gilbert melendez 10 most finishes cung le luke rockhold 7 most knockouts cung le 7 most submissions luke rockhold 5 in other media edit video games edit ea sports mma was released in 2010 featuring strikeforce fighters and branding along with fictional global mma organizations . this was the promotion s only video game and electronic arts now produces the ufc video game franchise . action figures edit figures were available from the company round 5 . 15 a series of their figures includes cung le and gina carano . the cung le figure was released at the 2009 san diego comic convention . an exclusive special version of the cung le figurine was released thereafter in which he has different colored shorts and design . see also edit mma portal list of strikeforce champions list of strikeforce events references edit sherdog fight finder . sherdog.com . retrieved 2009 02 08 . strikeforce on