American Claressa Shields fights in Rio boxing final

Nouchka Fontijn of the Netherlands wins silver


American boxer Claressa Shields won her second straight Olympic middleweight title by beating Nouchka Fontijn of the Netherlands in Sunday's gold medal bout.

She beat Fontjin, who won silver, 3-0.

In doing so, Shields, 21, of Flint, Michigan, became the first American boxer to win two Olympic gold medals.

The reigning world amateur and Pan American Games champion also ran her amateur record to 77-1 and remains unbeaten since winning at the 2012 London Games.

Kazakhstan's Dariga Shakimova and China's Li Qian each won bronze medals for losing in Friday's semifinals.