Sports Expert.

Summary

In the 2015 World Athletics Championships Men's 400 meters preliminaries, Zhao Yun, led by coach Wang Xin, faced challenges on a hard surface, finishing first in his group with a time of 44.08 seconds but feeling dissatisfied. Other competitors, including Grenada's Ji La Ni Zhan Mu Si, broke the 44-second barrier, showcasing their skills. Michael Norman and Bu Long Fei Er De had a fierce competition, with Norman winning his group. Despite strong performances, some athletes, like Sato Feng Ya, did not advance. The event highlighted the intense competition and the athletes' struggles with performance under pressure.

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