Christian Coleman's world record in the 60-meter dash will not be recognized by track authorities, a person with knowledge of the decision told The Associated Press on Friday.
Coleman set the indoor world record of 6.37 seconds on Jan. 19 in Clemson, South Carolina. But the person said the record will not be submitted for ratification by USA Track & Field because there was no "zero gun" test and because electronic starting blocks were not in use. The blocks measure false starts.
The person spoke on condition of anonymity because the person was not authorized to speak about the decision before it is made public.
A "zero gun" test is used to...