If ratified, his performance would take 0.02 off the world record that was set in 1998 – and then equalled in 2001 – by Maurice Greene.
Making his first competitive appearance of the year, Coleman had hinted that something special was on the cards when he won his heat in 6.47.
The 21-year-old set his previous best of 6.45 when winning the NCAA indoor 60m title last year. Outdoors, he went on to clock a 100m PB of 9.82 before earning silver medals in the 100m and 4x100m at the World Championships in London.
*Pending the usual ratification procedures