Grand Slam Track “went too fast” in first season, says Michael Johnson - SportsPro
Startup track league’s founder Michael Johnson reveals investor pulling out caused “major, major cash flow issue”.| SportsPro
Startup track league’s founder Michael Johnson reveals investor pulling out caused “major, major cash flow issue”.| SportsPro
The 2026 season of Michael Johnson’s Grand Slam Track is on ice until the competition's debts are settled.| SportsPro
