Ronda Rouesy needed just 34 seconds to secure a knockout victory over Bethe Correia and retain her UFC women's bantamweight title at UFC 190.
The victory takes Rousey to 12-0, with eleven of those wins coming in the first round, with Correia added to the long list of fighters who were simply no match for the American.
Rousey came out with all guns blazing in what was her fifth title defence, and soon had Correia in trouble, with the local favourite losing her footing before recovering as the barrage of punches momentarily ceased.
However, it would prove to be only the briefest period of respite as a flurry of uppercuts and a knee to the midriff later, and Rousey connected with a right to the temple of Correia which sent the Brazilian sprawling to the canvas.
Referee John McCarthy had little option but to stop the fight just 34 seconds in, as Rousey secured yet another thoroughly dominant victory.