View All Photos From IAAF World Youth Championships!

The Mixed 4x400m relay of Sammy Watson, Norman Grimes, Keshun Reed and Lynna Irby posted a World Youth Record of 3:19.54 to win the final event of the IAAF World Youth Championships on Sunday, July 19.

Team USA won an unprecedented 19 medals at the IAAF World Youth Championships in Cali, Colombia over the past five days. Scroll through images by Kirby Lee to relive every day of the action!

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