The Boys' 400 metres at the 2017 World Youth Championships in Athletics was held on 12–14 July.
Records Prior to the competition, the following records were as follows.
World Youth Best45.14Santiago de Chile, Chile2 September 1995Championship Record45.24Bressanone, Italy10 July 2009World Youth Leading45.38Albuquerque, New Mexico, United States3 June 2017
Heats Qualification rule: first 4 of each heat (Q) and the next 4 fastest qualified.iaaf.org - International Association of Athletics Federations
Rank Heat Lane Name Nationality Time Notes 1 1 Anthony Cox 1 2 Thiran Kalavitigoda Pathirannahalage 1 3 Gregor Grahovac 1 4 Correy Sherrod 1 5 Xu Bo 1 6 Patrice Remanoro 1 7 Ali Soleymani 1 8 Mohammad Jahir Rayhan 2 2 Daniel Williams 2 3 Elvin Josué Canales 2 4 Thiruben Thana Rajan 2 5 Melkamu Assefa 2 6 Eric Layeng 2 7 José Álvarez 2 8 Antonio Grant 3 1 Reuben Nichols 3 2 Musa Isah 3 3 Manish Manish 3 4 Kelvin Sawe Tauta 3 5 Elián Larregina 3 6 Mohamed Naail 3 7 Yaroslav Demchenko 3 8 Nsikak Francis Okon 4 1 Yaroslav Holub 4 2 Deng Hantao 4 3 Mohammad Reza Dehghani 4 4 Alexandru Vlad 4 5 Antonio Watson 4 6 David Sanayek 4 7 Ivan Danny Geldenhuis 4 8 Akshay Nain 5 2 Tyrell Simms 5 3 Emmanuel Goni 5 4 Bruno Benedito da Silva 5 5 Diego Camacho 5 6 Kennedy Luchembe 5 7 Bernard Olesitse 5 8 Colby Jennings
Semifinals Semifinal 1 Rank Name Nationality Reaction Time Notes 1 Colby Jennings 0.224 47.36 , 2 Melkamu Assefa 0.214 47.43 3 Kelvin Sawe Tauta 0.370 47.55 4 Elvin Josué Canales 0.243 48.21 5 Thiruben Thana Rajan 0.171 48.40 6 Musa Isah 0.187 48.43 7 Xu Bo 0.226 48.90 8 Bernard Olesitse 0.161 50.54
Semifinal 2 Rank Name Nationality Reaction Time Notes 1 Anthony Cox 0.266 46.86 2 Ivan Danny Geldenhuys 0.181 47.24 , 3 Daniel Williams 0.186 47.46 4 David Sanayek 0.199 47.66 5 Mohammad Jahir Rayhan 0.198 48.22 6 José Álvarez 0.160 48.79 7 Deng Hantao 0.185 49.12 8 Tyrell Simms 0.167 49.38
Semifinal 3 Rank Name Nationality Reaction Time Notes 1 Bruno Benedito da Silva 0.215 46.87 , 2 Antonio Watson 0.000 47.05 , 3 Gregor Grahovac 0.183 47.34 , 4 Yaroslav Demchenko 0.178 47.96 5 Reuben Nichols 0.215 48.01 6 Correy Sherrod 0.211 48.56 7 Thiran Kalavitigoda Pathirannahalage 0.188 48.89 – Antonio Grant
Final Rank Name Nationality Reaction Time Notes Antonio Watson 0.174 46.59 Daniel Williams 0.200 46.72 Colby Jennings 0.213 46.77 4 Anthony Cox 0.210 46.77 5 Melkamu Assefa 0.249 47.05 6 Bruno Benedito da Silva 0.231 47.15 7 Ivan Danny Geldenhuys 0.192 47.17 8 Gregor Grahovac 0.157 48.88
References