2009 World Championships in Athletics – Men's 4 × 100 metres relay
Introduction The '''men's 4 × 100 metres relay''' at the 2009 World Championships in Athletics took place at the Olympic Stadium in Berlin on August 21 and August 22.The two main contenders for the event were the reigning World Champions, the United States, and the reigning Olympic Champions, Jamaica. Jamaica held the world record at 37.10 (which was later rescinded), which was established at the 2008 Summer Olympics in Beijing, while the United States entered with the 2009 overall season-best 37.85.
Medalists ''''Steve MullingsMichael FraterUsain BoltAsafa PowellDwight Thomas*Lerone Clarke*''''Darrel BrownMarc BurnsEmmanuel CallanderRichard ThompsonKeston Bledman*''''Simeon WilliamsonTyrone EdgarMarlon DevonishHarry Aikines-Aryeetey Runners who participated in the heats only and received medals.
Records Prior to the competition, the following records were as follows. '''World record''' Jon Drummond, Andre Cason, Dennis Mitchell, Leroy Burrell '''37.40'''Stuttgart, Germany21 August 1993'''Championship record''' Jon Drummond, Andre Cason, Dennis Mitchell, Leroy Burrell '''37.40'''Stuttgart, Germany21 August 1993'''World Leading'''Racers Track Club Daniel Bailey, Yohan Blake, Mario Forsythe, Usain Bolt '''37.46'''London, Great Britain25 July 2009'''African Record''' Osmond Ezinwa, Olapade Adeniken, Francis Obikwelu, Davidson Ezinwa '''37.94'''Athens, Greece9 August 1997'''Asian Record''' Naoki Tsukahara, Shingo Suetsugu, Shinji Takahira, Nobuharu Asahara'''38.03'''Osaka, Japan1 September 2007'''North American Record''' Jon Drummond, Andre Cason, Dennis Mitchell, Leroy Burrell '''37.40'''Stuttgart, Germany21 August 1993'''South American record''' André da Silva, Claudinei da Silva, Vicente de Lima, Édson Ribeiro'''37.90'''Sydney, Australia30 September 2000'''European Record''' Dwain Chambers, Jason Gardener, Darren Campbell, Marlon Devonish'''37.73'''Seville, Spain29 August 1999'''Oceanian Record''' Paul Henderson, Tim Jackson, Steve Brimacombe, Damien Marsh'''38.17'''Gothenburg, Sweden12 August 1995No new world or championship record was set during this competition.
Qualification standard Standard 39.10
Schedule  Date Time RoundAugust 21, 2009  '''19:30'''   '''Heats'''August 22, 2009  '''20:50'''   '''Final'''
Results ===Heats===The first 2 of each heat (Q) plus the 2 fastest times (q) qualify.Rank  Heat   Nation  Athletes  Time  Notes      2   Simeon Williamson, Tyrone Edgar, Marlon Devonish, Harry Aikines-Aryeetey    38.11 Q, SB      1   Darrel Brown, Marc Burns, Keston Bledman, Richard Thompson      38.47    Q       3    Roberto Donati, Simone Collio, Emanuele Di Gregorio, Fabio Cerutti    38.52   Q, SB      1    Masashi Eriguchi, Naoki Tsukahara, Shinji Takahira, Kenji Fujimitsu      38.53    Q     1   Ronald Pognon, Martial Mbandjock, Pierre-Alexis Pessonneaux, Christophe Lemaitre      38.59     q, SB      2   Hank Palmer, Oluseyi Smith, Jared Connaughton, Bryan Barnett     38.60    Q, SB      3   Lerone Clarke, Michael Frater, Steve Mullings, Dwight Thomas    38.60  Q   1   Vicente de Lima, Sandro Viana, Basílio de Moraes, José Carlos Moreira    38.72  q, SB    3   Anthony Alozie, Josh Ross, Aaron Rouge-Serret, Matt Davies    38.93  SB  10   2  Gregory Sedoc, Caimin Douglas, Guus Hoogmoed, Patrick van Luijk     38.95 SB  11    2   Dany Gonçalves, Arnaldo Abrantes, Ricardo Monteiro, Francis Obikwelu     39.25     12    1    Pascal Mancini, Marc Schneeberger, Reto Schenkel, Marco Cribari 39.47   13    2   Nana Kofi Samm, Tanko Braimah, Seth Amoo, Aziz Zakari   39.61   SB  14    1   Hannes Dreyer, Leigh Julius, Thuso Mpuang, L. J. van Zyl    39.71   15    3    Apinan Sukaphai, Wachara Sondee, Suppachai Chimdee, Sittichai Suwonprateep   39.73        2    Terrence Trammell, Michael Rodgers, Shawn Crawford, Darvis Patton      Illegal handover       3   Tobias Unger, Marius Broening, Alexander Kosenkow, Martin Keller            3   Michał Bielczyk, Dariusz Kuć, Mikołaj Lewański, Robert Kubaczyk    '''Key''':  DNF = Did not finish, DNS = Did not start, DQ = Disqualified, Q = qualification by place in heat, q = qualification by overall place, SB = Seasonal best===Final===Rank   Nation  Athletes  Time  Notes   Steve Mullings, Michael Frater, Usain Bolt, Asafa Powell    37.31 '''WR'''    Darrel Brown, Marc Burns, Emmanuel Callander, Richard Thompson    37.62  '''NR'''   Simeon Williamson, Tyrone Edgar, Marlon Devonish, Harry Aikines-Aryeetey   38.02SB4   Masashi Eriguchi, Naoki Tsukahara, Shinji Takahira, Kenji Fujimitsu  38.30SB5   Sam Effah, Oluseyi Smith, Jared Connaughton, Bryan Barnett  38.39SB6   Roberto Donati, Simone Collio, Emanuele Di Gregorio, Fabio Cerutti  38.547   Vicente de Lima, Sandro Viana, Basílio de Moraes, José Carlos Moreira  38.56SB8   Ronald Pognon, Martial Mbandjock, Eddy De Lepine, Christophe Lemaitre  39.21'''Key''':  CR = Championship record, NR = National record, SB = Seasonal best
References ;General* 4×100 metres relay results. IAAF. Retrieved on 2009-08-20.;Specific