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Memorable knock-outs from throughout MMA history.

From Dunn, N.C.

Coverage and highlights of the powerboat races.

Top-performing athletes from all over the globe showcase their skills as they compete in the SailGP to win the coveted title.

From Wembley Stadium in London.

The Chicago Stars FC host the San Diego Wave FC in an NWSL regular season soccer match. Chicago forward Jordyn Huitema has two goals this season, while San Diego forward Dudinha leads San Diego Wave FC with four goals this season.

The story of SailGP and the people involved with it.

Top-performing athletes from all over the globe showcase their skills as they compete in the SailGP to win the coveted title.

FIM Motocross World Championship action from Germany.

Bantamweight champion Aljamain Sterling defends his title against fighting rival, Sean O'Malley. Also, Zhang Weili goes head-to-head with veteran Amanda Lemos.

Newly crowned bantamweight champion Sean O'Malley has his first title defense against the only man to beat him, top contender Marlon Vera. Plus, Dustin Poirier takes on Benoit Saint Denis and Michael Page makes his debut against Kevin Holland.