The six - time Olympic gold medallist , who has struggled for form this season , had been entered for the 100 metres on Thursday .
His manager Ricky Simms said it had never been his definite intention to run .
The six - time Olympic gold medallist , who has struggled for form this season , had been entered for the 100 metres on Thursday , but his manager Ricky Simms said it had never been his definite intention to run .