Yego flung himself forward as he released his third round effort, hitting the synthetic runway as his javelin sailed out to 92.72 metres.

Egypt’s Ihab El-Sayed posted a season’s best to take silver with 88.99m, despite fouling with his final four throws.

World Championships Two Kenyan athletes fail drugs tests 26/08/2015 AT 11:03

Finland’s Tero Pitkamaki won bronze with a mark of 87.64m.

Yego missed out on a bronze medal in heart-breaking circumstances at the 2013 edition in Moscow as home favourite Dmitriy Tarabin snatched third with his final throw.

The 26-year-old is perhaps best known for coaching himself with the assistance of YouTube.

There was a thrilling conclusion to the women’s 3000m steeplechase as Hyvin Kiyeng Jepkemoi claimed victory.

Jepkemoi was abreast with Tunisia’s Habiba Ghribi and Germany’s Gesa Felicitas Krause down the home straight, but had the strength and speed to triumph.

Ghribi finished second in 9:19.24, with Krause placing third in 9:19.25.

In the women’s 400m hurdles, Zuzana Hejnova defended her title with an impressive 53.50s clocking.

American duo Shamier Little (53.94s) and Cassandra Tate (54.02s) took silver and bronze respectively.