Sydney McLaughlin broke a national record from 1984 on Sunday at New Balance Nationals! Only a junior, she put on a show running 54.46 to win her third straight national championship in the 400 meter hurdles. That is a US junior record and #2 All-Time U-20 in the world!
The previous national record was held by California's Leslie Maxie at 55.20.
More info to come.