Strikeforce heavyweight champion Alistair Overeem tapped out British veteran James Thompson with a first-round standing guillotine in the main event of Sunday's DREAM.12 at the Osaka-jo Hall in Osaka, Japan.

Thompson immediately tried to rush Overeem, but was shrugged off. Overeem launched a high flying knee that almost caught his own left arm on the top of the cage. Thompson rushed Overeem once more but was caught in Overeem's trademark choke.

Bellator lightweight champion Eddie Alvarez ran into trouble early on against Katsunori Kikuno but scored the takedown in the second round and finished with an arm-triangle choke.

Marius Zaromskis, who dismantled both Hayato "Mach" Sakurai and Jason High in one evening with head kicks to win the DREAM welterweight title, added to his highlight reel by knocking out Bae Myeon Ho early in the first round with a left kick to the head.

In an incredible come-from-behind victory, Kazushi Sakuraba absorbed punishing right blows from Zelg Galesic only to pull out a kneebar for the submission win. The fight was similar to Sakuraba's K-1 Hero's fight in August 2006 against Kestutis Smirnovas when Sakuraba won by armbar after being allowed an unusually long time to weather ground and pound strikes.

Other Results:

Keisuke Fujiwara def. Tomoya Miyashita via unanimous decision Kuniyoshi Hironaka def. Won Sik Park ("Parky") via TKO - R1, 5:00 Yoshiro Maeda def. Chase Beebe via submission (rear-naked choke) - R1 Yoon Dong Sik def. Tarec Saffiedine via split decision Katsuyori Shibata def. Tokimitsu Ishizawa via TKO - R1

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