400 Metres Summary | IAAF World U20 Championships Tampere 2018

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

POS	Rank	Heat	BIB	ATHLETE	COUNTRY	RESULTS	ms*
1	1	1	147	Jonathan Sacoor	BEL	45.72 Q NU20R
2	1	2	402	Edoardo Scotti	ITA	45.84 Q NU20R
3	1	3	417	Christopher Taylor	JAM	46.18 Q
4	2	1	419	Chantz Sawyers	JAM	46.19 Q
5	2	2	145	Jonathan Jones	BAR	46.22 Q
6	2	3	181	Khamal Stewart-Baynes	CAN	46.38 Q
7	3	3	642	Howard Fields	USA	46.53 q	.524
8	3	2	186	Myles Misener-Daley	CAN	46.53 q	.526
9	3	1	207	Matěj Krsek	CZE	46.59 NU20R
10	4	2	662	Umajesty Williams	USA	46.72
11	4	1	174	Bruno Silva	BRA	46.74	.736
12	4	3	519	Szymon Kreft	POL	46.74	.740
13	5	3	565	Aruna Dharshana	SRI	46.75
14	5	2	233	Alfredo Jimenez	ESP	46.93 PB
15	6	3	177	Musa Isah	BRN	46.94
16	5	1	397	Klaudio Gjetja	ITA	47.10
17	6	2	669	Kennedy Luchembe	ZAM	47.35
18	6	1	578	Ricky Petrucciani	SUI	47.39
19	7	2	551	Gabriel Louw	RSA	47.63
20	7	3	316	Jean Paul Bredau	GER	47.70
21	7	1	115	Christian Davis	AUS	47.86
22	8	2	564	Boško Kijanović	SRB	48.15
23	8	1	511	Antonio Grant	PAN	48.23
		3	468	Ilhwan Mo	KOR	DQ