U.S. Middleweight: 171-185 lbs.

Eugene Jackson and Ronald Jhun compete for the inaugural Strikeforce U.S. middleweight championship.

Eugene Jackson
Ronald Jhun
Submission (rear-naked choke) @ 2:01 of R1
Strikeforce: Triple Threat

Eugene Jackson vacates the Strikeforce U.S. middleweight championship after announcing his retirement from mixed martial arts.

Strikeforce chooses to dissolve the Strikeforce U.S. middleweight championship.

Strikeforce ceases operations and folds on January 13, 2013 after being purchased by UFC parent company Zuffa and ultimately merged with the UFC.