Amanda Nunes, right, throws a punch at Ronda Rousey in the first round of their women's bantamweight championship mixed martial arts bout at UFC 207, Friday, Dec. 30, 2016, in Las Vegas. Nunes won the fight after it was stopped in the first round. (AP Photo/John Locher)

Amanda Nunes thinks it’s time for Ronda Rousey to call it quits

Brazilian champion stops American challenger after just 48 seconds following a devastating four-punch combination in Las Vegas at UFC 207

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Amanda Nunes, right, throws a punch at Ronda Rousey in the first round of their women's bantamweight championship mixed martial arts bout at UFC 207, Friday, Dec. 30, 2016, in Las Vegas. Nunes won the fight after it was stopped in the first round. (AP Photo/John Locher)
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