Video: Shakima Wimbley Talks USATF 400 Win

The first-year pro’s 49.52 PR equaled her training partner Shaunae Miller-Uibo’s world lead and made her the No. 7 U.S. performer all-time.

Sieg Lindstrom is Track & Field News's Editor. He fell in love with the sport as a high school distance runner, and has covered 9 editions of the Olympics and 16 outdoor World Championships. In a feverish effort to brush up his résumé before he was hired, he also attended the ’84 Olympics and ’87 Worlds as a fan.