Sydney McLaughlin lowered her own world junior record in the 400m hurdles from 54.15 to 54.03 today at the NJSIAA Group Championships, where she captured her fourth consecutive win in the Non-Public A section.

54.03

— Sydney McLaughlin (@GoSydGo) June 2, 2017

The run is only the third 400m hurdles race that McLaughlin has competed in this year; she opened her season with a 56.15 at the Blue Devil Classic and clocked 55.52 at her sectional championship last weekend.

The senior at Union Catholic High School set the prior world junior record at 54.15 last summer, when she took third in the 400m hurdles at the U.S. Olympic Trials and earned a spot at the Rio Games. McLaughlin, a University of Kentucky recruit, will also compete in the 400m this weekend and attempt to lower her state record of 51.87. Her indoor best over the flat 400m is 51.61, which stands at the national high school record indoors and the 10th-best mark all-time for indoors and outdoors.

McLaughlin's time ranks No. 3 in the world this year, behind only Americans Ashley Spencer and Shamier Little, who ran 53.38 and 53.44 at the Prefontaine Classic last Saturday. Spencer is the 2016 Olympic bronze medalist in the 400m hurdles.

​Watch Sydney McLaughlin: Prodigy