The men's 100 metres at the 2009 World Championships in Athletics were held at the Olympic Stadium on August 15 and August 16. The two main contenders for the event were the reigning World Champion Tyson Gay and Usain Bolt, the reigning Olympic champion and world record holder. Gay entered the competition with a season's best of 9.77 seconds (an American record) while Bolt's season's best was 9.79 seconds. Four other competitors had broken the 10-second barrier during the last months before the World Championship: former world record holder Asafa Powell, Olympic finalist Churandy Martina and emerging sprinters Daniel Bailey and Mike Rodgers.Ramsak, Bob (2009-08-09). Men's 100m - PREVIEW. IAAF. Retrieved on 2009-08-14. Archived 2009-09-08.

The first day saw a number of high-profile athletes eliminated; Derrick Atkins, the 2007 silver medallist, did not pass the first round.Ramsak, Bob (2009-08-15). Event Report - Men's 100m - Heats. IAAF. Retrieved on 2009-08-16. Archived 2009-09-08. Churandy Martina, area record holders Samuel Francis and Olusoji Fasuba, Simeon Williamson, and 2003 gold medallist Kim Collins were all knocked out in the quarter-finals. Also, a double false start meant disqualification for the new European junior record holder Christophe Lemaitre. Gay, Powell and Rodgers ended with the fastest times of the day, although Bolt and Bailey comfortably won heat five, exchanging smiles and glances in the process.Ramsak, Bob (2009-08-15). Event Report - Men's 100m - Quarter-Final . IAAF. Retrieved on 2009-08-16.Bolt and Gay ease into 100m semis . BBC Sport (2009-08-15). Retrieved on 2009-08-16. The semi-finals saw Bolt—typically slow out of the blocks—false start for the first time over 100 m, but he eventually finished in 9.89 seconds (the fastest ever semi-final). Six of the eight qualifying athletes broke 10 seconds, and US champion Rodgers was the biggest name not to qualify.Ramsak, Bob (2009-08-16). Event Report - Men's 100m - Semi-Final . IAAF. Retrieved on 2009-08-20.

The final, which was advertised in Berlin as "Das Duell" between Gay and Bolt,Hersh, Phillip (2009-08-14). Tyson Gay heads to the starting blocks against Usain Bolt. Los Angeles Times. Retrieved on 2009-08-20. proved to be historic. By the 20-metre mark, Bolt had already taken a slight lead of 0.01 seconds, and he continued to pull away from the rest of the pack until the finish.World Athletics: can Usain Bolt run 9.4 secs?. The Daily Telegraph (2009-08-18). Retrieved on 2009-08-20. He finished in a world record-breaking time of 9.58 seconds, beating Gay by some distance, even though the American had run 9.71 seconds, which was the third fastest time ever.Ramsak, Bob (2009-08-16). Event Report - Men's 100m - Final . IAAF. Retrieved on 2009-08-20. Bolt beat his own previous mark that he set when winning gold at the 2008 Summer Olympics in Beijing by over a tenth of a second, an achievement statisticians claimed was 20 years ahead of schedule in the long term scheme of the 100 metres world record progression.Gibson, Owen (2009-08-17). From man to superman ... Usain Bolt raises the pace of change. The Guardian. Retrieved on 2009-08-20. So emphatic was Bolt's winning time, that both bronze medal winner Powell and sixth placed Dwain Chambers said they were happy just taking part in the fastest race in history.Broadbent, Rick (2009-08-17). Chambers just happy to appear in the fastest final in history. The Times. Retrieved on 2009-08-20.

Records Prior to the competition, the records were as follows:

World record9.69Beijing, China 16 August 2008Championship record9.80Seville, Spain22 August 1999World Leading9.77Rome, Italy10 July 2009African record9.85Doha, Qatar12 May 2006Asian record9.99Amman, Jordan26 July 2007North American record9.69Beijing, China 16 August 2008South American record10.00Mexico, Mexico22 July 1988European record9.86Athens, Greece22 August 2004Oceanian record9.93Mito, Japan5 May 2003

The following new world championship and North American records were set during the competition.

Date Event Athlete Time Notes 16 August Final 9.58 s WR, CR, WL

Qualification standards A timeB time 10.21 10.28

Schedule Date Time RoundAugust 15, 2009 11:40 HeatsAugust 15, 2009 18:50 QuarterfinalsAugust 16, 2009 19:10 SemifinalsAugust 16, 2009 21:35 Final

Results KEY:qFastest non-qualifiersQQualifiedNRNational recordPBPersonal bestSBSeasonal best

Heats Qualification: First 3 in each heat (Q) and the next 4 fastest (q) advance to the quarterfinals.

Rank Heat Name Nationality Time Notes 11 Tyson Gay 10.16 Q 4 Dwain Chambers 10.18 Q 9 Usain Bolt 10.20 Q 8 Samuel Francis 10.21 Q 6 Christophe Lemaitre 10.23 Q 8 Emmanuel Callander 10.24 Q 12 Michael Rodgers 10.25 Q 5 Daniel Bailey 10.26 Q 2 Darvis Patton 10.26 Q 8 Churandy Martina 10.26 Q 11 8 Daniel Grueso 10.27 q 12 3 Martial Mbandjock 10.28 Q 12 11 Kim Collins 10.28 Q 12 12 Naoki Tsukahara 10.28 Q 12 8 Rolando Palacios 10.28 q, SB 16 1 Michael Frater 10.30 Q 16 7 Andrew Hinds 10.30 Q 16 9 Gerald Phiri 10.30 Q 16 9 Egwero Ogho-Oghene 10.30 Q 20 4 Olusoji Fasuba 10.31 Q 21 4 Monzavous Edwards 10.32 Q 22 7 Simeon Williamson 10.34 Q 23 2 Emanuele Di Gregorio 10.35 Q 23 5 Jaysuma Saidy Ndure 10.35 Q 23 12 Adam Harris 10.35 Q 23 7 Ronald Pognon 10.35 Q 23 7 Martin Keller 10.35 q, SB 28 10 Richard Thompson 10.36 Q 28 11 Fabio Cerutti 10.36 Q 30 5 Adrian Griffith 10.37 Q 31 3 Obinna Metu 10.38 Q 31 2 Masashi Eriguchi 10.38 Q 31 3 Asafa Powell 10.38 Q 34 6 Marc Burns 10.39 Q 34 7 Ángel David Rodríguez 10.39 q, SB 36 3 Aziz Ouhadi 10.40 37 1 Arnaldo Abrantes 10.41 Q 37 2 Barakat Al-Harthi 10.41 37 4 Ben Youssef Meité 10.41 40 10 Tyrone Edgar 10.42 Q 40 9 Bryan Barnett 10.42 40 5 Tobias Unger 10.42 43 3 Derrick Atkins 10.44 44 6 Dariusz Kuć 10.46 Q 44 5 Adrian Durant 10.46 46 1 Shintaro Kimura 10.47 Q 46 12 Ramon Gittens 10.47 48 1 Simone Collio 10.49 49 2 Stefan Schwab 10.50 50 12 Cédric Nabe 10.51 51 1 Matic Osovnikar 10.52 52 4 Shehan Abeypitiyage 10.53 53 10 Simon Magakwe 10.54 Q 53 7 Basílio de Moraes Júnior 10.54 55 9 José Carlos Moreira 10.55 55 1 Béranger Aymard Bosse 10.55 57 10 Aziz Zakari 10.57 58 6 Ryan Moseley 10.58 59 11 Kemar Hyman 10.59 60 4 Wilfried Bingangoye 10.62 61 2 Liaquat Ali 10.64 62 6 Franklin Nazareno 10.71 63 11 Carlos Jorge 10.73 64 10 Idrissa Sanou 10.74 65 8 Fernando Lumain 10.76 66 6 Chi Ho Tsui 10.77 67 10 Mhadjou Youssouf 10.89 SB 68 12 Danny D'Souza 10.92 69 1 Jack Iroga 10.98 SB 70 8 Hussain Haleem 11.00 NR 71 8 Suwaibou Sanneh 11.02 SB 72 10 Desislav Gunev 11.07 73 4 Mohamed Faisal 11.12 PB 74 2 Oumar Bella Bah 11.20 PB 75 3 Ivano Bucci 11.24 75 5 Jurgen Themen 11.24 77 7 Denvil Ruan 11.31 PB 78 9 Aisea Tohi 11.32 78 6 Mohamed Masudul Karim 11.32 SB 80 11 Aaron Victorian 11.37 PB 81 11 Tiraa Arere 11.55 82 9 Okilani Tinilau 11.57 SB 83 3 Leon Mengloi 11.60 PB 84 7 Soulisack Silisavadymao 11.66 SB 85 10 Nooa Takooa 11.74 PB 86 6 Quaski Itaia 11.76 SB 87 5 Yondan Namelo 11.78 PB 88 4 Masoud Azizi 11.79 SB 89 12 Phillip Poznanski 11.97 PB 90 12 Clayton Kenty 12.29 PB 1 Dominic Carroll 2 Delivert Arsene Kimbembe

Quarterfinals Qualification: First 3 in each heat(Q) and the next 1 fastest(q) advance to the semifinals.

Rank Heat Name Nationality Time Notes 3 Asafa Powell 9.95 Q 4 Tyson Gay 9.98 Q 2 Michael Rodgers 10.01 Q 5 Daniel Bailey 10.02 Q 5 Usain Bolt 10.03 Q 1 Dwain Chambers 10.04 Q, SB 3 Darvis Patton 10.05 Q 1 Richard Thompson 10.08 Q 4 Michael Frater 10.09 Q 10 2 Tyrone Edgar 10.12 Q 10 3 Marc Burns 10.12 Q 12 5 Monzavous Edwards 10.15 Q 12 2 Naoki Tsukahara 10.15 Q 14 4 Jaysuma Saidy Ndure 10.16 Q 14 2 Gerald Phiri 10.16 q, NR 16 5 Churandy Martina 10.19 16 2 Egwero Ogho-Oghene 10.19 18 3 Kim Collins 10.20 18 3 Samuel Francis 10.20 20 1 Martial Mbandjock 10.22 Q 21 4 Andrew Hinds 10.23 21 5 Simeon Williamson 10.23 23 5 Rolando Palacios 10.24 SB 24 3 Olusoji Fasuba 10.25 25 1 Emanuele Di Gregorio 10.26 26 5 Emmanuel Callander 10.27 26 3 Ronald Pognon 10.27 28 4 Adrian Griffith 10.28 29 4 Obinna Metu 10.36 30 4 Fabio Cerutti 10.37 31 5 Dariusz Kuć 10.38 32 1 Adam Harris 10.39 32 4 Ángel David Rodríguez 10.39 SB 34 1 Arnaldo Abrantes 10.40 34 1 Martin Keller 10.40 36 1 Masashi Eriguchi 10.45 37 3 Shintaro Kimura 10.54 38 2 Simon Magakwe 10.71 2 Christophe Lemaitre 2 Daniel Grueso

Semifinals First 4 of each Semifinal will be directly qualified(Q) for the Finals.

Semifinal 1

Rank Lane Name Nationality React Time Notes 1 6 Usain Bolt 0.135 9.89 Q 2 4 Daniel Bailey 0.135 9.96 Q 3 3 Darvis Patton 0.152 9.98 Q, SB 4 8 Marc Burns 0.159 10.01 Q, SB 5 5 Michael Rodgers 0.154 10.04 6 1 Martial Mbandjock 0.138 10.18 7 2 Jaysuma Saidy Ndure 0.143 10.20 7 Tyrone Edgar

Semifinal 2

Rank Lane Name Nationality React Time Notes 1 5 Tyson Gay 0.143 9.93 Q 2 4 Asafa Powell 0.133 9.95 Q 3 3 Richard Thompson 0.132 9.98 Q, SB 4 6 Dwain Chambers 0.182 10.04 Q, SB 5 7 Michael Frater 0.153 10.14 6 2 Monzavous Edwards 0.146 10.14 7 1 Gerald Phiri 0.143 10.19 8 8 Naoki Tsukahara 0.152 10.25

Final

Rank Lane Name Nationality React Time Notes 4 Usain Bolt 0.146 9.58 WR 5 Tyson Gay 0.144 9.71 NR 6 Asafa Powell 0.134 9.84 SB 4 3 Daniel Bailey 0.129 9.93 5 8 Richard Thompson 0.119 9.93 SB 6 1 Dwain Chambers 0.121 10.00 SB 7 2 Marc Burns 0.165 10.00 SB 8 7 Darvis Patton 0.149 10.34

References General 100 metres results from IAAF (Archived 2009-09-08). IAAF. Retrieved on 2009-08-15. Specific

External links Biomechanical analysis of the sprinters splits in the semi-final and final. from the IAAF Statistical analysis of Bolt and Powell's speed in the final from the IAAF from Universal Sports