The men's 400 metres at the 2018 IAAF World Indoor Championships took place on 2 and 3 March 2018.Start list

Summary For the first time ever in a World Championship, every runner in a single preliminary heat was disqualified. It was the third heat, where first returning silver medalist Abdalelah Haroun false started himself out of the heat. #5 runner of all time Bralon Taplin won the heat, but he and the other three remaining runners Austris Karpinskis, Alonzo Russell and Steven Gayle were then disqualified for lane violations.

2012 Champion Nery Brenes also found himself disqualified after winning the fifth heat. With two place qualifiers missing, it opened the door for Juander Santos and Mikhail Litvin to take the extra time qualification positions in the semi-final round.

In the final, Óscar Husillos from lane 6 was first to the break line and took the lead with a lap to go, holding the lead to cross the finish line first in a time of 44.92. However, Husillos and Luguelín Santos were disqualified for lane violations, giving Pavel Maslák his third consecutive championship, Michael Cherry the silver, and Deon Lendore the bronze.

Results Heats The heats were started on 2 March at 11:20.Heats results

Rank Heat Lane Name Nationality Time Notes1 2 6 Luka Janežič 46.45 Q2 6 5 Óscar Husillos 46.51 Q3 1 5 Jakub Krzewina 46.57 Q4 1 6 Deon Lendore 46.68 Q5 5 6 Aldrich Bailey 46.77 Q6 6 6 Pavel Maslák 46.80 Q7 5 5 Lee Thompson 46.81 Q8 6 3 Luguelín Santos 46.83 q9 6 4 Yousef Karam 46.86 q10 2 5 Javon Francis 46.87 Q11 2 4 Chidi Okezie 46.91 q12 2 3 Asa Guevara 46.92 q13 1 3 Lucas Búa 46.96 q14 5 4 Patrik Šorm 46.99 q15 4 5 Michael Cherry 46.99 Q16 1 4 Juander Santos 47.02 q17 4 6 Rafał Omelko 47.13 Q18 4 3 Mikhail Litvin 47.16 q19 4 4 Vitalii Butrym 47.45 20 1 2 Michael Anthony Rasmijn 49.20 NR21 6 1 Davron Atabaev 49.20 SB22 2 1 Kelvin Delvin Ramírez 49.88 SB23 2 2 Tikie Terry Mael 49.92 PB24 4 2 Mohamed Naail 49.98 NR25 6 2 Narek Ghukasyan 51.02 PB 3 5 Abdalelah Haroun 162.8False start 3 6 Bralon Taplin 163.3(a)Lane infringement 3 2 Austris Karpinskis 163.3(a) 3 4 Alonzo Russell 163.3(a) 3 3 Steven Gayle 163.3(a) 5 3 Nery Brenes 163.3(a) 5 2 Mazen Alyasen

Semifinal The semifinals were started on 2 March at 21:06.Semifinals results

Rank Heat Lane Name Nationality Time Notes 1 2 5 Óscar Husillos 45.69 Q 2 2 6 Michael Cherry 45.73 Q 3 1 3 Luguelín Santos 46.31 Q, SB 4 3 4 Pavel Maslák 46.32 Q 5 1 6 Aldrich Bailey 46.33 Q 6 3 6 Deon Lendore 46.33 Q 7 3 5 Luka Janežič 46.37 8 2 4 Rafał Omelko 46.39 9 1 5 Jakub Krzewina 46.69 10 1 4 Javon Francis 46.73 11 2 2 Juander Santos 46.83 PB 12 2 1 Asa Guevara 46.91 13 1 2 Patrik Šorm 47.04 14 2 3 Lee Thompson 47.14 15 1 1 Lucas Búa 47.14 16 3 1 Mikhail Litvin 47.94 17 3 2 Chidi Okezie 48.53 3 3 Yousef Karam

Final

The final was started on 3 March at 20:20.Final results

Rank Name Nationality Time Notes Pavel Maslák 45.47 SB Michael Cherry 45.84 Deon Lendore 46.37 4 Aldrich Bailey 46.44 Óscar Husillos DQ 163.3(b)Lane infringement; originally finished first with time|page=44.92 Luguelín Santos DQ 163.3(b)Lane infringement; originally finished second

References