400 Metres Hurdles 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
1	1	3	555	Sokwakhana Zazini	RSA	49.43 Q
2	2	3	294	Alastair Chalmers	GBR	50.11 Q NU20R
3	3	3	428	Leonardo Ledgister	JAM	50.13 q PB
4	1	2	427	Malik James-King	JAM	50.34 Q
5	4	3	400	Alessandro Sibilio	ITA	50.73 q SB
6	5	3	647	Quivell Jordan	USA	50.86
7	1	1	175	Alison dos Santos	BRA	50.90 Q
8	2	2	379	Mahdi Pirjahan	IRI	50.98 Q NU20R
9	3	2	306	Alex Knibbs	GBR	50.99
10	4	2	144	Rasheeme Griffith	BAR	51.02 SB
11	2	1	540	Bassem Hemeida	QAT	51.14 Q
12	5	2	439	Yusuke Shirao	JPN	51.21
13	6	2	554	Lourens Steenekamp	RSA	51.26
14	3	1	655	Cory Poole	USA	51.27
15	4	1	583	Carl Bengtström	SWE	51.55
16	7	2	574	Julien Bonvin	SUI	51.83
17	5	1	460	Moitalel Mpoke Naadokila	KEN	51.94
18	6	3	496	Ramsey Angela	NED	51.99
19	7	3	229	Jesús David Delgado	ESP	52.18
20	6	1	336	Ierotheos Dritsas	GRE	52.38
21	7	1	349	Boaz Madeus	HAI	54.45
22	8	3	143	Nathan Fergusson	BAR	54.58
		1	488	Ismail Manyani	MAR	DQ
		2	244	Aleix Porras	ESP	DNS

400 Metres Hurdles men