The men's 100 metres event at the 2000 World Junior Championships in Athletics was held in Santiago, Chile, at Estadio Nacional Julio Martínez Prádanos on 17 and 18 October.

Medalists Gold Mark Lewis-Francis Silver Salem Al-Yami Bronze Marc Burns

Results Final 18 October Wind: +0.1 m/s Rank Name Nationality Time Notes Mark Lewis-Francis 10.12 Salem Al-Yami 10.38 Marc Burns 10.40 4 Darrel Brown 10.40 5 Michael Frater 10.46 6 Ricardo Alves 10.52 7 Saad Al-Shahwani 10.54 8 Helly Ollarves 10.64

Semifinals 18 October

Semifinal 1 Wind: -0.3 m/s Rank Name Nationality Time Notes 1 Mark Lewis-Francis 10.24 Q 2 Darrel Brown 10.49 Q 3 Ricardo Alves 10.50 Q 4 Michael Frater 10.51 Q 5 Rae Edwards 10.51 6 Fabrice Calligny 10.59 7 Takashi Mogi 10.67 8 Khaled Al-Obaidli 10.70

Semifinal 2 Wind: -0.3 m/s Rank Name Nationality Time Notes 1 Salem Al-Yami 10.37 Q 2 Marc Burns 10.47 Q 3 Saad Al-Shahwani 10.52 Q 4 Helly Ollarves 10.57 Q 5 Łukasz Chyła 10.58 6 Kostyantyn Vasyukov 10.62 7 Dwight Shakespeare 10.65 8 Tim Williams 10.75

Quarterfinals 17 October

Quarterfinal 1 Wind: +0.7 m/s Rank Name Nationality Time Notes 1 Marc Burns 10.43 Q 2 Helly Ollarves 10.46 Q 3 Kostyantyn Vasyukov 10.46 Q 4 Dwight Shakespeare 10.50 Q 5 Scott Richardson 10.51 6 Bruno Campos 10.52 7 Nico Grimbeeck 10.69 8 Morten Jensen 10.70

Quarterfinal 2 Wind: -0.6 m/s Rank Name Nationality Time Notes 1 Mark Lewis-Francis 10.13 Q 2 Darrel Brown 10.34 Q 3 Fabrice Calligny 10.45 Q 4 Khaled Al-Obaidli 10.49 Q 5 Kazuya Kitamura 10.54 6 Martín Rodríguez 10.59 7 Sergio Riva 10.61 8 Andra Fifer 10.69

Quarterfinal 3 Wind: -0.3 m/s Rank Name Nationality Time Notes 1 Ricardo Alves 10.44 Q 2 Michael Frater 10.53 Q 3 Rae Edwards 10.56 Q 4 Tim Williams 10.60 Q 5 Kevin Rans 10.64 6 Mariusz Latkowski 10.65 7 David Socrier 10.80 8 Ville Vakkuri 10.82

Quarterfinal 4 Wind: -1.1 m/s Rank Name Nationality Time Notes 1 Salem Al-Yami 10.32 Q 2 Saad Al-Shahwani 10.48 Q 3 Łukasz Chyła 10.50 Q 4 Takashi Mogi 10.61 Q 5 Tyrone Edgar 10.62 6 Harry Adu-Mfum 10.68 7 Jan Mörsch 10.78 8 Liu Chih-Hung 11.01

Heats 17 October

Heat 1 Wind: +2.2 m/s Rank Name Nationality Time Notes 1 Mark Lewis-Francis 10.25 w Q 2 Fabrice Calligny 10.53 w Q 3 Takashi Mogi 10.56 w Q 4 Saad Al-Shahwani 10.56 w q 5 Kevin Rans 10.66 w q 6 Pablo Del Valle 10.77 w 7 Dmitriy Chumichkin 11.04 w

Heat 2 Wind: +1.1 m/s Rank Name Nationality Time Notes 1 Bruno Campos 10.49 Q 2 Ville Vakkuri 10.53 Q 3 Mariusz Latkowski 10.57 Q 4 Sergio Riva 10.64 q 5 Nico Grimbeeck 10.66 q 6 Gergely Németh 10.75 7 Rasgawa Pinnock 10.80 8 Guillermo Dongo 10.80

Heat 3 Wind: -0.6 m/s Rank Name Nationality Time Notes 1 Salem Al-Yami 10.27 Q 2 Dwight Shakespeare 10.54 Q 3 Jan Mörsch 10.66 Q 4 Tal Mor 10.84 5 Ernst Pollman 10.84 6 Jorge Ramírez 11.08 7 Ahmed Hunain 11.73

Heat 4 Wind: +0.8 m/s Rank Name Nationality Time Notes 1 Ricardo Alves 10.46 Q 2 Tyrone Edgar 10.46 Q 3 Khaled Al-Obaidli 10.52 Q 4 David Socrier 10.72 q 5 Rodrigo Díaz 10.75 6 Churandy Martina 10.77 7 Mario Trillo 10.86 8 David Falealili 13.16

Heat 5 Wind: -1.3 m/s Rank Name Nationality Time Notes 1 Darrel Brown 10.60 Q 2 Harry Adu-Mfum 10.62 Q 3 Scott Richardson 10.65 Q 4 Rui Tavares 10.89 5 Kenneth Goeieman 10.92 6 Gergely Nagy 10.97 7 Bob Colville 11.00 8 Darren Gilford 11.18

Heat 6 Wind: -0.5 m/s Rank Name Nationality Time Notes 1 Łukasz Chyła 10.54 Q 2 Michael Frater 10.59 Q 3 Tim Williams 10.65 Q 4 Mihaíl Perrákis 10.75 5 Saad Al-Zefiri 10.85 6 Enrico Rigato 10.87 7 Poh Seng Song 11.14 8 Marcos Nsi 11.17

Heat 7 Wind: -0.8 m/s Rank Name Nationality Time Notes 1 Marc Burns 10.49 Q 2 Martín Rodríguez 10.69 Q 3 Andra Fifer 10.73 Q 4 Kazuya Kitamura 10.74 q 5 Michael Kummer 10.84 6 Lachie McLellan 10.92 7 Henry Ben 10.95 8 Kelly Olegerill 11.29

Heat 8 Wind: +1.3 m/s Rank Name Nationality Time Notes 1 Rae Edwards 10.51 Q 2 Kostyantyn Vasyukov 10.53 Q 3 Helly Ollarves 10.59 Q 4 Morten Jensen 10.67 q 5 Liu Chih-Hung 10.72 q 6 Nazmizan Mohamad 10.80 7 Leonid Hiunidi 11.00 Roland Kwitt DQ IAAF rule 162.7

Participation According to an unofficial count, 62 athletes from 44 countries participated in the event.

References