The Men's 100 Butterfly event at the 10th FINA World Aquatics Championships swam 25–26 July 2003 in Barcelona, Spain. PreliminaryWorlds 2003 results: Men's 100 fly - prelims. Published by Omega Timing (official timer) on 2003-07-25; retrieved 2003-07-26. and SemifinalWorlds 2003 results: Men's 100 fly - simis. Published by Omega Timing (official timer) on 2003-07-25; retrieved 2003-07-26. heats swam July 25, with the prelims during the morning session and the semifinals in the evening session. The FinalWorlds 2003 results: Men's 100 fly - final. Published by Omega Timing (official timer) on 2003-07-26; retrieved 2003-07-26. was held on July 26.

Records Prior to this competition, the existing world and competition records were as follows: World record 51.81 Canberra, Australia 12 December 1999 Championship record 52.10 Fukuoka, Japan 26 July 2001 The following records were established during the competition:

DateRoundNameNationalityTimeRecord 25 July Semifinal 1 Andriy Serdinov Ukraine 51.76 WR 25 July Semifinal 2 Michael Phelps United States 51.47 WR 26 July Final Ian Crocker 50.98 WR

Results

Final Place Swimmer Nation Time Notes 1 Ian Crocker 50.98 WR 2 Michael Phelps 51.10 3 Andriy Serdinov 51.59 ER 4 Igor Marchenko 51.95 5 Thomas Rupprath 51.98 6 Takashi Yamamoto 52.27 7 Franck Esposito 52.68 8 Evgueni Korotychkine 53.00

Semifinals Rank Heat+Lane Swimmer Nation Time Notes 1 S2 L4 Michael Phelps 51.47 q, WR 2 S1 L6 Andriy Serdinov 51.76 q, ER 3 S1 L4 Ian Crocker 52.21 q 4 S1 L5 Thomas Rupprath 52.37 q 5 S1 L2 Igor Marchenko 52.44 q 6 S2 L5 Franck Esposito 52.49 q 7 S1 L8 Evgueni Korotychkine 52.55 q 7 S2 L3 Takashi Yamamoto 52.55 q 9 S1 L3 Mike Mintenko 52.57 10 S1 L1 Joris Keizer 52.64 11 S1 L7 Adam Pine 53.05 12 S2 L8 Denis Sylantyev 53.12 13 S2 L7 Geoff Huegill 53.13 14 S2 L2 Mattia Nalesso 53.16 15 S2 L1 Ioan Gherghel 53.18 16 S2 L6 Johannes Dietrich 53.76

Preliminaries Rank Heat+Lane Swimmer Nation Time Notes 1 H15 L4 Michael Phelps 52.27 q 2 H15 L5 Ian Crocker 52.35 q 3 H14 L3 Franck Esposito 52.85 q 4 H14 L4 Thomas Rupprath 52.91 q 4 H14 L6 Takashi Yamamoto 52.91 q 6 H15 L3 Mike Mintenko 52.92 q 7 H12 L3 Johannes Dietrich 53.01 q 8 H13 L4 Andriy Serdinov 53.06 q 9 H14 L8 Mattia Nalesso 53.12 q 10 H13 L5 Igor Marchenko 53.21 q 11 H14 L5 Geoff Huegill 53.28 q 12 H15 L2 Adam Pine 53.31 q 13 H15 L8 Ioan Gherghel 53.42 q 14 H15 L6 Joris Keizer 53.44 q 15 H12 L5 Denis Sylantyev 53.45 q 16 H15 L7 Evgueni Korotychkine 53.48 q 17 H13 L6 Pavel Lagoun 53.68 18 H13 L3 Lars Frölander 53.74 19 H13 L7 Corney Swanepoel 53.95 20 H14 L7 Josh Ilika 53.96 20 H14 L1 Zsolt Gáspár 53.96 22 H12 L7 Kaio Almeida 53.98 23 H12 L8 Ryan Pini 54.05 24 H11 L5 Tero Välimaa 54.07 25 H10 L1 Luis Rojas 54.09 25 H15 L1 Hao Jin 54.09 27 H12 L6 Theo Verster 54.16 28 H13 L2 Jere Hård 54.21 29 H10 L6 Andrew Livingston 54.48 30 H11 L6 Camilo Becerra 54.56 31 H11 L3 Ravil Nachaev 54.64 31 H13 L1 Rimvydas Salcius 54.64 33 H11 L1 Georgi Palazov 54.70 34 H12 L4 Simão Morgado 54.81 35 H11 L7 Lyndon Ferns 54.94 36 H10 L8 Romāns Miloslavskis 55.12 37 H11 L4 Erik Andersson 55.19 37 H11 L8 Jeong Doo-Hee 55.19 37 H12 L2 Gabriel Mangabeira 55.19 40 H10 L5 Aleksandar Miladinovski 55.23 41 H09 L2 Petter Sjodal 55.27 42 H09 L4 Aghiles Slimani 55.40 43 H08 L4 Pavel Suškov 55.64 44 H09 L3 Rustam Khudiyev 55.66 45 H07 L4 Nicholas Rees 55.89 46 H10 2L Philipp Gilgen 55.90 47 H10 L7 Zoran Lazarovski 55.93 48 H10 L3 Luis Monteiro 55.95 49 H10 L4 David Kolozar 56.07 50 H09 L1 Jae Hyon Joe 56.30 51 H08 L8 Huazhang Zheng 56.36 52 H08 L6 Conrad Francis 56.55 53 H09 L5 Luc Decker 56.56 54 H09 L6 Albert Subirats 56.73 55 H08 L5 Oleg Lyashko 56.76 56 H09 L8 Raouf Benabid 56.88 57 H09 L7 Yu Lung Lubrey Lim 56.95 58 H06 L5 Lorenz Liechti 57.04 59 H08 L3 Wing Cheung Victor Wong 57.28 60 H07 L2 Nedim Nišić 57.39 61 H08 L1 William Muriel 57.52 62 H07 L7 Ignacio Sanchez Leon 57.69 63 H08 L2 Shui Ki Szeto 57.81 64 H06 L4 Jorge Arturo Arce 57.87 65 H07 L8 Gunther Streit 57.93 66 H07 L5 James Walsh 58.04 67 H04 L7 Khaly Ciss 58.62 68 H06 L2 Tuck Kar Wong 58.66 69 H05 L4 Davy Bisslik 58.67 70 H06 L7 Miguel Navarro 58.71 70 H07 L3 Sergio Cabrera 58.71 72 H08 L7 David Cartin 58.79 73 H07 L6 Stavros Michaelides 58.80 74 H06 L1 Jean Paul Adam 58.85 75 H05 L3 Yann Lausan 58.91 76 H06 L3 Gordon Touw Ngie Tjouw 59.05 77 H05 L2 Roy Barahona 59.09 78 H05 L5 Jewel Md. Jewel Ahmed 59.22 79 H05 L7 Cliff Gittens 59.35 80 H06 L8 Zurab Khomasuridze 59.56 81 H07 L1 Rafael de Leon Alfaro 59.81 82 H05 L8 Malick Fall 59.90 83 H04 L5 Chad Miller 59.93 84 H04 L8 Bertrand Bristol 1:00.30 85 H02 L4 Fernando Medrano 1:00.80 86 H02 L2 Musa Bakare 1:00.87 87 H04 L4 Abed Rahman Kaaki 1:01.08 88 H03 L2 Obied Ahmed Al Jassimi 1:01.16 89 H03 L5 Dean Palacios 1:01.19 90 H04 L3 Joao Matias 1:01.37 91 H04 L6 Marc Dansou 1:01.66 92 H01 L1 Aung Kyaw Moe 1:01.67 93 H05 L1 Babak Farhoudi 1:01.73 94 H02 L3 Joao Aguiar 1:01.89 95 H03 L6 Omar Núñez 1:02.15 96 H04 L2 Benjamin Wells 1:02.31 97 H03 L7 Ammar Musaed Al Tamimi 1:02.41 98 H01 L4 Ilidio Matusse 1:02.95 98 H03 L4 Raad Awisat 1:02.95 100 H02 L8 Kabir Walia 1:03.18 101 H02 L7 Rony Bakale 1:03.61 102 H03 L8 Zaid Saeed 1:04.42 103 H05 L6 Gustavo Adolfo Martinez 1:05.57 104 H01 L7 Maximilien J. Doualla Frederic 1:06.14 105 H02 L5 Daniel Kang 1:06.30 106 H01 L5 Kin-Vincent Duenas 1:06.46 107 H02 L1 Neils Agius 1:07.19 108 H01 L6 Muzeya Muzyamba 1:08.82 109 H01 L2 Chisela Kanchela 1:12.62 110 H01 L8 Hassan Mubah 1:14.43 - H14 L2 Ryo Takayasu DQ - - Frédérick Bousquet DNS - - Milorad Čavić DNS - - Pablo Martín Abal DNS - - Ronald Cowen DNS - - Gregory Arkhurst DNS - - Landry Degnifo Enokorin DNS - - Yan Lin Aung DNS - - Sean Chow DNS - - Clark Randrianandraina DNS

References