Sydney McLaughlin, a junior at Union Catholic in New Jersey, set a national record in the girls 400 meters at the New Balance Indoor Nationals on Sunday with a time of 51.84 seconds.
The national high school record of 51.93 was held by Francena McCoroy of Bethel High in Hampton Va., in 2006. McCrory went on to win an Olympic gold medal in the 4×400 relay at the London Olympics.
She also eclipsed the record for the famed Armory, which was 52.10 in 2002 by four-time Olympic gold medalist Sanya Richards.
McLaughlin’s national record followed her performance Saturday when she set the New Jersey record and ran the fourth fastest time in history at 52.77.
If that weren’t enough, she then ran a 51.6 split as the anchor in Union’s 4×400 relay team that finished in 3:40.28, which is second all time.