Olympic champion Claressa Shields won by knockout in the first women’s boxing match to headline a premium television event in the United States.
The American, 21, who won middleweight gold at London 2012 and Rio 2016, turned professional in October.
Shields stopped Hungary’s Szilvia Szabados with a strong punch in the fourth round in Detroit to take the North American Boxing Federation title.
She previously won her first professional fight in November.
The fight – which topped the bill – aired on Showtime, a premium channel which requires traditional cable subscribers to pay an additional fee.
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