The 18-year-old Athing Mu who runs for Texas A&M University clocked an amazing World junior u-20 record at the Charlie Thomas Invitational in Bryan-College Station, TX on February 6.
Mu clocked 50.52, smashing Sanya Richards-Ross World U-20 400m record of 50.82. Mu also broke 2011 Bowerman winner Jessica Beard's 10-year old school record of 50.79.
"The other day I was sitting in front of her Bowerman poster that listed all of her accomplishments and I thought 'Wow, she is crazy good.'. It's really cool to have that record now." said Mu.
See the full women's 400m results here.