Swimming at the 2003 World Aquatics Championships – Men's 100 metre backstroke
Introduction The '''Men's 100 Backstroke''' event at the 10th FINA World Aquatics Championships swam 21 – 22 July 2003 in Barcelona, Spain. Preliminary and Semifinal heats swam on July 21; the Final was held on July 22.At the start of the event, the existing World (WR) and Championship (CR) records were:*'''WR''': 53.60 swum by Lenny Krayzelburg (USA) on August 24, 1999 in Sydney, Australia*'''CR''': 54.31 swum by Matt Welsh (Australia) on July 23, 2001 in Fukuoka, Japan
Results ===Final=== Place  Swimmer  Nation  Time  Notes 1  Aaron Peirsol    53.61  '''CR''' 2  Arkady Vyatchanin    53.92  2  Matt Welsh    53.92  4  Steffen Driesen    54.17  5  Markus Rogan    54.53  6  Tomomi Morita    54.86  7  László Cseh    54.95  8  Alex Lim    55.18 ===Semifinals=== Rank  Heat + Lane  Swimmer  Nation  Time  Notes 1  S2 L5  Aaron Peirsol    54.28  q, CR 2  S1 L4  Arkady Vyatchanin    54.49  q 3  S1 L1  Steffen Driesen    54.60  q 4  S2 L4  Matt Welsh    54.77  q 4  S2 L8  Alex Lim    54.77  q 6  S2 L2  Markus Rogan    55.11  q 7  S2 L3  László Cseh    55.12  q 8  S1 L5  Tomomi Morita    55.17  q 9  S2 L6  Ouyang Kunpeng    55.21   10  S1 L3  Blaž Medvešek    55.30   11  S1 L7  Simon Dufour    55.31   12  S1 L8  Atsushi Nishikori    55.36   13  S2 L1  Răzvan Florea    55.42   14  S1 L2  Örn Arnarson    55.67   15  S1 L6  Yoav Gath    55.71   16  S2 L7  Péter Horváth    55.83  ===Preliminaries=== Rank  Heat+Lane  Swimmer  Nation  Time  Notes 1  H12 L4  Matt Welsh    54.79  q 2  H10 L2  Arkady Vyatchanin    54.81  q 3  H11 L4  Aaron Peirsol    54.99  q 4  H12 L6  Tomoni Morita    55.06  q 5  H11 L7  László Cseh    55.11  q 6  H10 L8  Blaž Medvešek    55.28  q 7  H11 L1  Ouyang Kunpeng    55.29  q 8  H08 L4  Yoav Gath    55.41  q 9  H11 L5  Markus Rogan    55.42  q 10  H09 L8  Örn Arnarson    55.47  q 10  H10 L3  Péter Horváth    55.47  q 12  H11 L2  Simon Dufour    55.49  q 13  H09 L1  Răzvan Florea    55.56  q 13  H10 L5  Steffen Driesen    55.56  q 15  H11 L6  Alex Lim    55.62  q 16  H12 L5  Atsushi Nishikori    55.67  q 17  H10 L7  Riley Janes    55.76   18  H12 L8  Gerhard Zandberg    55.80   19  H12 L3  Josh Watson    55.81   20  H09 L5  Karel Novy    55.82   21  H12 L1  David Ortega    55.85   22  H12 L7  Toni Helbig    55.90   23  H10 L6  Gordan Kožulj    55.94   24  H09 L4  Ahmed Hussein    55.95   25  H08 L2  Darius Grigalionis    56.00   26  H08 L7  Ryan Pini    56.06   27  H10 L1  Volodymyr Nikolaychuk    56.14   28  H09 L7  Cameron Gibson    56.22   29  H12 L2  Evgueni Alechine    56.31   30  H11 L3  Pierre Roger    56.34   31  H11 L8  Min Sung    56.38   32  H07 L6  Pavel Suškov    56.42   33  H09 L2  Jorge Sánchez    56.44   34  H08 L6  Klaas Erik Zwering    56.58   35  H07 L4  Pavlo Illichov    56.60   36  H09 L3  Rui Yu    56.77   37  H09 L6  Paulo Machado    57.01   38  H08 L3  Nuno Laurentino    57.10   39  H08 L1  Flori Lang    57.12   40  H07 L7  Jens Petersson    57.36   41  H07 L5  Keith Beavers    57.54   42  H07 L1  Martin Viilep    57.69   42  H08 L5  Sander Ganzevles    57.69   44  H01 L6  Mattias Ohlin    57.75   45  H08 L8  Gabriel Mangabeira    58.08   46  H07 L3  Alexandr Ivlev    58.53   47  H07 L2  Andrei Mihailov    58.67   48  H07 L8  Nicholas Bovell    59.42   49  H06 L4  Mauricio Prudencio    59.62   50  H06 L8  Jared Heine    1:00.13   51  H06 L3  Ashby Brendan    1:00.21   52  H06 L7  Yau Sun Fai    1:00.87   53  H06 L2  Guillermo Andres Ramirez Lemis    1:01.38   54  H06 L1  Gustavo Vera    1:01.44   55  H05 L4  Long Do Huy    1:02.06   56  H06 L5  Mikhail Alekseyev    1:02.38   57  H05 L1  Roberto Sanso    1:02.40   58  H04 L3  Khaly Ciss    1:02.49   59  H05 L5  Danil Bugakov    1:02.67   60  H05 L7  Mohammad Nazeri    1:02.75   61  H06 L6  Yury Zaharov    1:02.91   62  H04 L4  James Walsh    1:03.72   63  H05 L3  Abed Rahman Kaaki    1:03.77   64  H05 L6  Oleg Deikrishvili    1:03.84   65  H04 L5  Chi Lon Lei    1:03.86   66  H03 L5  Onan Thom    1:03.91   67  H04 L6  Ammar Musaed Al Tamimi    1:04.31   68  H04 L2  Omar Abu Faris    1:04.45   69  H03 L6  Seung Gin Lee    1:04.80   70  H05 L2  Olufolahan Oluwole    1:05.35   71  H04 L8  Kabir Walia    1:05.50   72  H04 L1  Rubel Mohammad Rubel Rana    1:05.62   73  H05 L8  Rony Bakale    1:05.82   74  H03 L2  Nuno Rola    1:06.49   75  H02 L5  Patrick Boustany    1:07.14   76  H03 L3  Daniel Kang    1:07.92   77  H03 L4  Urnultsaikhan Ganbold    1:08.19   78  H03 L7  Sean Chow    1:09.18   79  H02 L1  Muzeya Muzyamba    1:10.71   80  H02 L6  Kin-Vincent Duenas    1:11.15   81  H01 L4  Peter James Linch    1:12.30   82  H02 L2  Leonel Matonse    1:13.11   83  H02 L8  Mohammed S. Abbas    1:13.75   84  H03 L8  Hadjamamed Hadjamamedov    1:14.23   -  -  Randall Bal    DQ   -  -  Landry H. Degnifo Enokorin    DNS   -  -  Gibrilla Kanu    DNS   -  -  Awsan Mohammede Saleh Qardaa    DNS   -  -  Hem Lumphar    DNS
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