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matthew centrowitz


DES MOINES, Iowa — Dalilah Muhammad broke a 16-year-old world record in the 400m hurdles at the USATF Outdoor Championships on Sunday. Muhammad, the Rio Olympic champion, clocked 52.20 seconds on a wet track to take .14 off Russian Yuliya Pechonkina‘s mark from 2003. “My coach kept telling me it was there,” Muhammad, whose previous best was …