The men's 100 metres at the 2011 World Championships in Athletics was held at the Daegu Stadium on August 27 and August 28. The event was won by Yohan Blake of Jamaica, who became the youngest ever world champion in the 100 metres at , as highly favored defending champion and world record holder Usain Bolt was disqualified from the final for making a false start. Seventy four athletes started the competition, with 61 nations being represented (18 of them in the preliminaries only). It was the first global final to be held following the introduction of the no-false start rule.

The four fastest 100-metre runners of 2011 were absent: Mike Rodgers (9.85 sec) and Steve Mullings (9.80 sec) had been banned for doping offences, while Tyson Gay (9.79 sec) and 2011 world leader Asafa Powell (9.78 sec) could not compete due to injuries.

A preliminary round was introduced, where those entrants who had not obtained the 100 m qualification standard had to compete in a further qualifying stage before making it into the first round proper. This reduced the event to a three-round competition, as opposed to the traditional four, for qualified runners. Kim Kuk-Young (the host nation's sole entrant) was disqualified in this round for a false start. Abdouraim Haroun was the fastest preliminary runner, Keiron Rogers broke the Anguillian record, and while the slowest of the round was Sogelau Tuvalu, his time of 15.66 seconds was a personal best for the shot put specialist.Rowbottom, Mike (2011-08-27). Men's 100m - Preliminary Round. IAAF. Retrieved on 2011-08-29.

Usain Bolt had the fastest time of the first day (10.10) while his Jamaican compatriots won three of the other seven heats. Christophe Lemaitre, Kim Collins and Walter Dix were the other winners.Rowbottom, Mike (2011-08-27). Men's 100m - Heats - Bolt cool, calm and quick . IAAF. Retrieved on 2011-08-29. In the first of the semi-finals, Yohan Blake became the first man under ten seconds. Bolt won the second race as the second-fastest qualifier (10.05) and Collins won the third to become the oldest ever 100 m finalist. Frenchman Jimmy Vicaut became only the second junior athlete ever to qualify for the 100 m final, after Darrel Brown in 2003. The most prominent eliminations were Olympic silver medallist Richard Thompson (the fastest entrant that year with 9.85 sec) and 2004 Olympic champion Justin Gatlin. Dwain Chambers (a 2009 finalist) false-started, while sub-9.9 sec runners Michael Frater and Ngonidzashe Makusha also failed to progress.Rowbottom, Mike (2011-08-28). Men's 100m - Semi-final - Blake and Collins impress as Thompson makes early exit . IAAF. Retrieved on 2011-08-29.

In the 100 m final defending champion Usain Bolt caused an upset by false starting – Yohan Blake had made a slight movement but Bolt was the one who left his blocks, being immediately disqualified. In his absence, it was quick starter Kim Collins who led for the first half of the race. However, Blake was strongest in the second half, taking the lead and sprinting to win the gold medal with a time of 9.92 seconds into the −1.4 m/s headwind. Walter Dix made up ground on Collins, with the American edging into the silver medal position at the line by a margin of 0.01 seconds. At old, bronze medallist Collins became the oldest ever world medallist for the men's 100 m.Rowbottom, Mike (2011-08-28). Men's 100m - Final - Blake steals the show as Bolt incredibly false starts . IAAF. Retrieved on 2011-08-29.

Medalists GoldSilverBronzeYohan BlakeWalter DixKim Collins

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

World record9.58Berlin, Germany 16 August 2009Championship recordWorld Leading9.78Lausanne, Switzerland30 June 2011African Record9.85Doha, Qatar12 May 2006Asian Record9.99Amman, Jordan26 July 2007North, Central American and Caribbean record9.58Berlin, Germany16 August 2009South American Record10.00Mexico, Mexico22 July 1988European Record9.86Athens, Greece22 August 2004Oceanian record9.93Mito, Japan5 May 2003

Qualification standards A timeB time 10.18 10.25

Schedule Date Time RoundAugust 27, 2011 12:55 Preliminary roundAugust 27, 2011 21:45 HeatsAugust 28, 2011 18:30 SemifinalsAugust 28, 2011 20:45 Final

Results KEY:qFastest non-qualifiersQQualifiedNRNational recordPBPersonal bestSBSeasonal best

Preliminary round Qualification: First 3 in each heat (Q) and the next 1 fastest (q) advance to the heats.

Wind:Heat 1: +1.7 m/s, Heat 2: +1.2 m/s, Heat 3: -1.3 m/s, Heat 4: -0.9 m/s Rank Heat Name Nationality Time Notes 1 1 Abdouraim Haroun 10.44 Q, NR 2 2 Chi Ho Tsui 10.45 Q 3 1 Keiron Rogers 10.55 Q, NR 4 3 Gérard Kobéané 10.64 Q 5 2 Mohamed Fadlin 10.70 Q 6 3 Geronimo Goeloe 10.73 Q, SB 7 3 Foo Ee Yeo 10.76 Q 8 4 Noor Imran Hadi 10.77 Q 9 1 Jurgen Themen 10.84 Q 10 3 Delivert Arsene Kimbembe 10.85 q 11 4 Dmitrii Ilin 10.86 Q 12 2 Tilak Ram Tharu 11.00 Q, PB 13 4 Moudjib Toyb 11.07 Q 14 4 Karl Farrugia 11.21 15 4 Francis Manioru 11.28 SB 16 2 Rodman Teltull 11.31 PB 17 1 George Pine 11.34 SB 18 1 Kitavanah Kountavong 11.42 PB 18 4 Federico Gorrieri 11.42 20 1 Joshua Jeremiah 11.44 PB 21 3 Joseph Andy Lui 11.48 22 3 Bledee Jarry 11.49 PB 23 2 Mohamed Ghassem Ahmed Taled 11.50 PB 24 1 Okilani Tinilau 11.58 25 1 Christopher Lima da Costa 11.61 PB 26 2 Massoud Azizi 11.64 SB 27 2 John Howard 11.71 SB 28 3 Ah Chong Sam Chong 12.36 PB 29 3 Orrin Ogumoro Pharmin 12.60 PB 30 4 Sogelau Tuvalu 15.66 PB 2 Kim Kuk-Young

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

Wind:Heat 1: −1.7 m/s, Heat 2: −1.7 m/s, Heat 3: −1.0 m/s, Heat 4: −1.3 m/s, Heat 5: −1.2 m/s, Heat 6: −0.7 m/s, Heat 7: −1.2 m/s

Rank Heat Name Nationality Time Notes 1 6 Usain Bolt 10.10 Q 2 4 Yohan Blake 10.12 Q 3 1 Kim Collins 10.13 Q 4 3 Christophe Lemaitre 10.14 Q 5 2 Walter Dix 10.25 Q 5 4 Jimmy Vicaut 10.25 Q 7 5 Nesta Carter 10.26 Q 7 7 Michael Frater 10.26 Q 9 2 Harry Aikines-Aryeetey 10.28 Q 9 6 Dwain Chambers 10.28 Q 11 3 Justin Gatlin 10.31 Q 11 4 Ngonidzashe Makusha 10.31 Q 13 1 Trell Kimmons 10.32 Q 13 2 Keston Bledman 10.32 Q 13 3 Churandy Martina 10.32 Q 16 4 Justyn Warner 10.33 q 16 7 Jaysuma Saidy Ndure 10.33 Q 18 1 Richard Thompson 10.34 Q 18 5 Daniel Bailey 10.34 Q 18 3 Marlon Devonish 10.34 q 21 7 Dariusz Kuć 10.36 Q 22 6 Ángel David Rodríguez 10.37 Q 23 2 Andrew Hinds 10.41 q 24 5 Aziz Ouhadi 10.42 Q 24 5 Rytis Sakalauskas 10.42 24 4 Ramon Gittens 10.42 27 7 Reto Schenkel 10.44 28 4 Ben Youssef Meité 10.45 29 7 Aaron Armstrong 10.48 30 1 Suwaibou Sanneh 10.50 31 1 Ronalds Arājs 10.52 32 5 Marek Niit 10.53 32 6 Simon Magakwe 10.53 34 6 Nilson André 10.54 35 5 Aziz Zakari 10.55 36 2 Jason Smyth 10.57 36 2 Ogho-Oghene Egwero 10.57 38 1 Peter Emelieze 10.58 39 4 Gérard Kobéané 10.59 40 6 Gerald Phiri 10.60 41 3 Carlos Jorge 10.62 41 7 Álvaro Gómez 10.62 43 3 Gabriel Mvumvure 10.63 44 7 Chi Ho Tsui 10.65 45 6 Abdouraim Haroun 10.72 46 5 Mohammad Noor Imran A Hadi 10.75 47 2 Geronimo Goeloe 10.84 48 5 Foo Ee Yeo 10.85 49 1 Delivert Arsene Kimbembe 10.94 49 4 Jurgen Themen 10.94 51 3 Keiron Rogers 10.96 52 2 Mohamed Fadlin 11.00 52 3 Dmitrii Ilin 11.00 54 6 Moudjib Toyb 11.12 55 7 Tilak Ram Tharu 11.32 1 Adrian Griffith

Semifinals

Qualification: First 2 in each heat (Q) and the next 2 fastest (q) advance to the Final.

Wind:Heat 1: −0.4 m/s, Heat 2: −1.0 m/s, Heat 3: −0.8 m/s Rank Heat Name Nationality Time Notes 1 1 Yohan Blake Q, SB 2 1 Walter Dix 10.05 Q 2 2 Usain Bolt 10.05 Q 4 3 Kim Collins 10.08 Q 5 1 Jimmy Vicaut 10.10 q 6 2 Christophe Lemaitre 10.11 Q 7 1 Daniel Bailey 10.14 q 8 1 Keston Bledman 10.14 9 3 Nesta Carter 10.16 Q 10 2 Richard Thompson 10.20 11 2 Trell Kimmons 10.21 11 2 Jaysuma Saidy Ndure 10.21 13 2 Michael Frater 10.23 13 3 Harry Aikines-Aryeetey 10.23 13 3 Justin Gatlin 10.23 16 2 Marlon Devonish 10.25 17 3 Ngonidzashe Makusha 10.27 18 3 Churandy Martina 10.29 19 1 Andrew Hinds 10.32 20 3 Aziz Ouhadi 10.45 21 3 Justyn Warner 10.47 22 1 Ángel David Rodríguez 10.49 23 2 Dariusz Kuć 10.51 1 Dwain Chambers

Final

Wind: −1.4 m/s Rank Lane Name Nationality Time Notes 6 Yohan Blake SB 4 Walter Dix 10.08 3 Kim Collins 10.09 4 8 Christophe Lemaitre 10.19 5 2 Daniel Bailey 10.26 6 1 Jimmy Vicaut 10.27 7 7 Nesta Carter 10.95 5 Usain Bolt

References

External links 100 metres results at IAAF website