Olympics javelin: Keshorn Walcott of Trinidad and Tobago wins gold

Trinidad and Tobago's Keshorn Walcott throws a national record 84.58m to claim a surprise Olympic gold medal in the men's javelin.

The 19-year-old beat Ukraine's Oleksandr Pyatnytsya, who came second with 84.51m, while Finn Antti Ruuskanen's 84.12m took bronze.

Defending Olympic champion Andreas Thorkildsen of Norway had to settle for sixth place.

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