Amanda Nunes defends bantamweight crown, then bows out

Defending UFC bantamweight champion Amanda Nunes took a unanimous decision against Irena Aldana on Saturday night in UFC 289 in Vancouver, Canada, and then promptly announced her retirement.

Nunes, who is also the UFC women's featherweight champion, won by scores of 50-44 on two judges' cards and 50-43 on the third one.

She made a show of her decision to quit the sport, placing her two UFC belts in the Octagon, and afte