400 Metres Summary | 14th IAAF World Junior Championships

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

POS	Rank	Heat	BIB	ATHLETE	COUNTRY	RESULTS
1	1	3	901	Aldrich BAILEY JR	USA	45.79 Q
2	2	3	515	Javon FRANCIS	JAM	46.06 Q PB
3	1	1	40	Steven SOLOMON	AUS	46.07 Q
4	3	3	574	Boniface Ontuga MWERESA	KEN	46.20 q
5	1	2	917	Arman Hall	USA	46.42 Q
6	2	1	568	Alphas Leken KISHOYIAN	KEN	46.46 q
7	3	1	778	Nikita Uglov	RUS	46.49 q
8	4	3	702	Patryk DOBEK	POL	46.56
9	2	2	854	Machel CEDENIO	TTO	46.59 Q
10	5	3	31	Jarryd Buchan	AUS	46.81 PB
10	3	2	689	Andrew Whyte	NZL	46.81
12	4	2	958	José Meléndez	VEN	46.83
13	5	2	751	Pieter CONRADIE	RSA	46.87
14	4	1	489	Michele Tricca	ITA	46.92
15	6	2	52	O'Jay Ferguson	BAH	47.02
16	6	3	491	Marco Lorenzi	ITA	47.25
17	7	2	417	Stephan James	GUY	47.35
18	4	1	202	Mateo RUŽIĆ	CRO	47.46
19	6	1	588	Basheer Atiah Al Barakati	KSA	47.48
20	7	3	403	Daniel Gyasi	GHA	47.78
21	8	2	780	Nikita Besnin	RUS	48.02
22	7	1	748	Sorin Vatamanu	ROU	48.15
23	8	3	246	Julio ARENAS	ESP	50.00
		1	228	Luguelín SANTOS	DOM	DQ

400 Metres men