She defeated Tate by submission due to an armbar in the first round , again dislocating her opponent 's elbow , to become the new Strikeforce Women 's Bantamweight Champion .
Rousey challenged Tate for her Strikeforce title on March 3 , 2012 , in Columbus , Ohio .
Rousey defeated Tate by submission due to an armbar in the first round , again dislocating Rousey 's opponent 's elbow , to become the new Strikeforce Women 's Bantamweight Champion .
Rousey challenged Tate for her Strikeforce title on March 3 , 2012 , in Columbus , Ohio .