The time was in approved +0.8 meters per second in the back and had given a third place on last year's world best list.
After Usain Bolt retired, the world elite's times are between 19.70 and 19.90.
It was a personal record of 0.60 for the 22-year-old who in strong tailwind ran 19.64.
Bolt's world record is 19.19 from the 2009 World Cup final in Berlin.
Laird pulled away from the rest of the field at the start of the riot and pulled on his Louisana State University tank top (the same one that Armand Duplantis competed for) after finishing in the sunshine.
See the race here (external link)
Ronne Baker won the 100 meters in 9.94.
In the pole vault, Lisa Gunnarsson, 21, jumped at 4.50. Five-meter shopper Sandi Morris won at 4.80