Kenya, as future hosts of the World Athletics Championship, must strive for zero tolerance for drugs in sport, the World Anti-Doping Agency (WADA) boss said on Tuesday.

Lionel Messi brought the curtain down on his 21-year international career on Tuesday, bidding farewell to adoring Argentina fans in an emotional final appearance for the former world champions in Buenos Aires.

LIV, which spent billions of dollars luring top players away from the established PGA Tour and triggered bitter divisions within golf, filed for bankruptcy protection on September 8.

Other countries have until October 31 to declare an interest.

UEFA confirmed on Tuesday that it has opened an investigation into the tunnel bust-up during last weekend's Nations League game between the Republic of Ireland and Israel in Serbia.