Ronaldo Souza (white shorts) walks away from Derek Brunson after knocking him out during their match at STRIKEFORCE ON SHOWTIME ROUSEY VS. KAUFMAN at Valley View Casino Center in San Diego Saturday, August 18, 2012.(Hans Gutknecht/Staff Photographer)

Main Event Strikeforce Women’s Bantamweight Championship

Ronda Rousey def. Sarah Kaufman via submission (armbar) at 0:54 of round one

Ronaldo Souza def. Derek Brunson via KO at 0:41 of round one

Tarec Saffiedine def. Roger Bowling via unanimous decision

Anthony Smith def. Lumumba Sayers via submission at 3:52 of round one

Ovince St. Preux def. T.J. Cook via KO at 0:20 of round three

Preliminary Card:

Miesha Tate def. Julie Kedzie via submission at 3:28 of round three

Adlan Amagov def. Keith Berry via TKO at 0:48 of round one

Germaine de Randamie def. Hiroko Yamanaka via unanimous decision

Bobby Green def. Matt Ricehouse via unanimous decision