Michael Johnson cancels Los Angeles Grand Slam Track meeting

• Emergency meeting held with athletes over decision

• Decision leaves LA without major meeting this summer

Michael Johnson cancelled the final leg of the new Grand Slam Track series in Los Angeles before an emergency meeting with athletes on Thursday night, leaving the host of the 2028 Olympics and the country's second-largest city without a major track meeting this summer.

Johnson raised around $30m to launch Grand Slam Track this spring, promising a new way of doing track - involving a group of runners under contract racing twice over a weekend and focusing more on where they finished than actual times. Among the top athletes he signed were Olympic champions Sydney McLaughlin-Levrone and Gabby Thomas, though two other American track stars, Sha'Carri Richardson and Noah Lyles, did not race in the league.