400 Metres Result | 14th IAAF World Championships

First 2 in each heat (Q) and the next 2 fastest (q)

POS	BIB	ATHLETE	COUNTRY	MARK	Reaction Time
1	744	Youssef Ahmed MASRAHI	KSA	44.61 Q NR	0.158
2	1148	Tony MCQUAY	USA	44.66 Q SB	0.144
3	210	Anderson FREITAS HENRIQUES	BRA	44.95 q PB	0.167
4	175	Kévin BORLÉE	BEL	45.03	0.179
5	642	Javon FRANCIS	JAM	45.62	0.175
6	341	Nick EKELUND-ARENANDER	DEN	45.89	0.180
7	597	Brian GREGAN	IRL	45.98	0.208
8	666	Yuzo Kanemaru	JPN	46.28	0.154

POS	BIB	ATHLETE	COUNTRY	MARK	Reaction Time
1	1150	LaShawn Merritt	USA	44.60 Q	0.246
2	176	Jonathan BORLÉE	BEL	44.85 Q SB	0.165
3	151	Chris Brown	BAH	45.18 SB	0.216
4	1054	Deon LENDORE	TTO	45.47	0.190
5	612	Matteo GALVAN	ITA	45.69	0.177
6	647	Omar Johnson	JAM	45.89	0.192
7	345	Gustavo Cuesta	DOM	45.93	0.177
8	1198	José Meléndez	VEN	46.22	0.213

POS	BIB	ATHLETE	COUNTRY	MARK	Reaction Time
1	560	Kirani JAMES	GRN	44.81 Q	0.161
2	349	Luguelín SANTOS	DOM	44.83 Q	0.174
3	330	Pavel MASLÁK	CZE	44.84 q NR	0.167
4	1055	Jarrin Solomon	TTO	45.43	0.158
5	1129	Arman Hall	USA	45.54	0.158
6	488	Nigel Levine	GBR	45.60	0.176
7	637	Javere Bell	JAM	45.77	0.205
8	306	Nery Brenes	CRC	46.34	0.172