World silver medallist Christian Coleman is now the new world record holder over 60 meters.

This when he ran 6.34 seconds at the U.S. indoor national championships in new Mexico yesterday.

Coleman erased the mark of fellow American Maurice Greene who had held the record of 6.39 seconds for 20 years.

The performance at high altitude came after Coleman thought he had bettered Greene’s world record time with a run of 6.37 seconds last month in South Carolina.

However it was not ratified for technical reasons.