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TRINIDAD AND TOBAGO javelin star Keshorn Walcott has credited a coaching change for him finally capturing not only an elusive World Championship medal but securing it in its most precious form - gold.

Walcott launched the spear a massive season-best 88.16m to top the field in Tokyo, Japan, on September 18.

His success comes 13 years after the Toco native landed a historic Olympic gold medal in London. Back then, Walcott was coached by Cuban Ismael Mastrapa Lopez, who guided the TT athlete to a litany of medals, including Olympic bronze four years later.