Athletes promised thousands of pounds in payments for participating in Grand Slam Track events are still waiting for their money, despite organisers saying they had all been paid. Agents and sports-management companies told BBC Sport athletes are yet to receive money they are owed, despite GST founder Michael Johnson saying he had "got the athletes paid" after a "catastrophic capital issue" caused by investors pulling out. Four-time former Olympic champion Johnson launched GST in 2025 with the promise of lucrative prize money and salaries. "I'm happy to clear it up, because it's the most hurtful thing and the exact opposite of what was reported," Johnson told The Telegraph. Several high-profile athletes were owed payments of more than £100,000, including British former world 1500m champion Josh Kerr and Olympic 400m silver medallist Matthew Hudson-Smith.