The final leg of Grand Slam Track - the athletics competition backed by Olympic great Michael Johnson - is cancelled, sources tell the BBC.

Grand Slam Track has canceled the final meet of its first season, in Los Angeles, leaving the host of the 2028 Olympics and the country’s second-largest city without a major track meet this summer.

The Los Angeles leg of Michael Johnson's inaugural Grand Slam Track athletics series has been cancelled, officials confirmed Thursday.An official announcement later Thursday confirmed the decision.