Four-time Olympic champion Michael Johnson is the main public face of Grand Slam Track
The final leg of Grand Slam Track - the athletics competition backed by Olympic great Michael Johnson - has been cancelled because of economic concerns.
The fourth event in the inaugural GST season was set to take place in Los Angeles from 27-29 June.
But Johnson said on Thursday that organisers will instead concentrate on next season's programme.
"The global economic landscape has shifted dramatically in the past year, and this business decision has been made to ensure our long-term stability as the world's premier track league," said the GST founder and commissioner. "Our attention is now on 2026."
