The mens 400m heats

1 1148 Tony MCQUAY USAUSA 45.06 Q 0.162
Details 2 176 Jonathan BORLÉE BELBEL 45.24 Q 0.191
Details 3 341 Nick EKELUND-ARENANDER DENDEN 45.81 Q 0.185
Details 4 306 Nery BRENES CRCCRC 46.16 Q 0.193
Details 5 153 Ramon MILLER BAHBAH 47.53 0.251
Details 314 Yoandys LESCAY CUBCUB DQ 0.191
Details 808 Thet Zaw WIN MYAMYA DQ 0.189