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| Host city | Daegu, South Korea |
|---|---|
| Nations | 204 |
| Athletes | 1848[1] |
| Events | 47 |
| Dates | 27 August – 4 September 2011 |
| Opened by | PresidentLee Myung-bak |
| Closed by | IAAF PresidentLamine Diack |
| Main venue | Daegu Stadium |
The13th IAAF World Championships in Athletics (Korean:제13회 세계육상선수권대회) was an international athletics competition that was held inDaegu, South Korea. It started on 27 August 2011 and finished on 4 September 2011.
TheUnited States topped the medal standings in the competition with 28 (12 gold, 9 silver, and 7 bronze). During the competition, 41 national records, 4 area records, 3 championship records, and 1 world record was set.
The championships were heavily affected by post-championshipdoping cases, particularly from the Russian team, who in subsequent years were stripped of eleven medals, seven of them gold.
On 4 April 2006, theIAAF (nowWorld Athletics) announced that nine countries (United States,South Korea,Australia,Sweden,Spain,Russia, theUnited Arab Emirates,Croatia andMorocco) had submitted expressions of interest for hosting the 2011 World Championships.[2]
When the seeking deadline passed on 1 December 2006, four candidate cities (Brisbane,Daegu,Moscow andGothenburg) had confirmed their candidatures.[3] Gothenburg backed out later that month, citing lack of financial support from the Swedish government.[4]
Brisbane was announced as the Australian candidate with theQueensland Sport and Athletics Centre (formerly ANZ Stadium) as the proposed venue for a championships to be held in July or August. The stadium previously hosted the1982 Commonwealth Games and2001 Goodwill Games. Brisbane also had an unsuccessful bid for the2009 World Championships in Athletics.
Daegu was the city chosen for the Korean bid, following on from an initial application to host the 2009 edition. Daegu had previously hosted the2003 Summer Universiade and four matches of the2002 FIFA World Cup. TheWorld Championships in Athletics had never been staged in mainland Asia, although it has taken place twice inJapan.
The Russian bid had Moscow'sLuzhniki Stadium as the proposed venue. The city hosted the1980 Summer Olympics and the2006 IAAF World Indoor Championships.
Among the intent candidates wereCasablanca (Morocco) andSplit (Croatia), both of which were failed bidders for the2009 World Championships in Athletics. The Spanish candidate was rumored to be eitherMadrid orValencia,[2] but Spain eventually settled forBarcelona as a candidate for the2013 World Championships in Athletics.[3] The United States intent candidate city matched those bidding for the2016 Summer Olympics:Chicago,Los Angeles orSan Francisco.[5]
TheIAAF announced Daegu as the winning candidate at the IAAF Council Meeting inMombasa on 27 March 2007.[6] Its victory was based on "the quality of the stadiums and [meeting] the need for good crowds."[7] IAAF's officials also praised Daegu's "ambition and challenging spirit" as key to its winning bid.[8] Both Moscow and Brisbane later confirmed their candidacy to host the2013 World Championships in Athletics – a selection process won by the Russian capital.[3]
| Key | P | Q | H | ½ | F |
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| Value | Preliminary round | Qualifiers | Heats | Semifinals | Final |
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The events in the men's section ended with a world record in 4 × 100 metres relay set by Jamaica and several world's leading results.Jamaica dominated the sprinting events, whileKenya andEthiopia dominated the longer track events. In the field events, theUnited States andGermany were most successful, winning four and three gold medals respectively.Yohan Blake andUsain Bolt, both from Jamaica, won two gold medals, being the most successful athletes in the men's events.
In the100 m final the largely favored Usain Bolt was disqualified for afalse start, enablingYohan Blake to win the crown with a time of 9.92 s. In the200 m Bolt won with a time of 19.40 s, which was the fastest time ever not to be a world record at that point. Blake and Bolt, along with countrymenNesta Carter andMichael Frater, ran in the 4 x 100 metres relay, setting a new world record with a time of 37.04 s. In the10,000 metres event, World ChampionKenenisa Bekele did not finish the race. The world record holder in800 m,David Rudisha, won the event with his first gold medal at the World Championships. On the last day, KenyanAbel Kirui became the third marathon winner to retain the title at the next World Championships, after Abel Anton and Jaouad Gharib.
Most of the field events ended with new winners, butDwight Phillips retained thelong jump title, becoming only the second man afterIvan Pedroso to win four golds at the World Championships in this event.
Ethiopia'sImane Merga was originally awarded the bronze medal in theMen's 5000 metres, but he was later disqualified for having run inside the curb of the running track for some 10 to 15 metres. His teammateDejen Gebremeskel was elevated to the bronze medal as a result.[10]
Cuba'sDayron Robles finished first in the race of theMen's 110 metres hurdles, but was disqualified for interfering withLiu Xiang twice before and over the last barrier.Jason Richardson was awarded the Gold, Liu the Silver, andAndy Turner promoted to the Bronze medal position.



| Chronology:2007 |2009 |2011 |2013 |2015 |
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| Chronology:2007 |2009 |2011 |2013 |2015 |
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During the championships,Russia was the most successful country in the women's events, winning seven gold medals, followed by theUnited States with six. Most successful female athlete wasAllyson Felix having won two relay golds and silver and bronze in her individual events. On the first day of the Championships, the athletes ofKenya made an astonishing performance, winning all six medals available in the two events. Kenya also dominated the long-distance events, while Jamaica and the United States the sprinting. In the field events, Russia was initially dominant, winning four gold medals.
Following a series of retests of stored samples and biological passports, a number of athletes were stripped of medals because of doping. Nine medals in eight events were forfeited for doping, eight of them from Russia, including five gold medals. The only Russian medals that survived the post-championship doping purge were two gold medals in the high jump and the hammer throw, and a bronze medals in the pole vault and the 400 metres hurdles. Of the four surviving medalists, a further three were eventually banned for doping.
The amended results left the United States the clear leading nation in women's athletics.




| Chronology:2007 |2009 |2011 |2013 |2015 |
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| Chronology:2007 |2009 |2011 |2013 |2015 |
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Javelin Original gold medalistMariya Abakumova of
Russia was stripped of her gold medal.
Heptathlon Original gold medalistTatyana Chernova of
Russia was stripped of her gold medal on 29 November 2016 by the Court of Arbitration for Sport, with Ennis and Oeser promoted to gold and silver respectively and the bronze awarded to Karolina Tymińska of Poland.[13]
On 4 November 2011 the IAAF reported that 2 of the 468 urine samples had produced adverse analytical findings. The samples of Portuguese runnerSara Moreira, a finalist in the women's steeplechase, and Korean relay runnerHee-Nam Lim had both tested positive formethylhexaneamine. Analysis of blood samples is still ongoing.[14]
In March 2012 the Trinidad and Tobago track and field authorities announced thatSemoy Hackett had tested positive formethylhexaneamine at the Trinidad and Tobago national championships prior to the World Championships. Her results in the women's 100 metres were annulled and the Trinidadian 4 × 100-metres relay team were also disqualified from fourth place.[15]
An anonymous poll conducted by theWorld Anti-Doping Agency at the event showed that an estimated 29% of the athletes present at the World Championships had used a banned substance within the last 12 months.[16]

Originally, host nation South Korea failed to win any medals at these championships, a fate shared with Sweden in1995 and Canada in2001. However, in 2015, South Korean athleteKim Hyun-sub was promoted from sixth place to bronze medalist in the 20 km walk after three Russian race walkers were disqualified for doping offences.
* Host nation (South Korea)
| Rank | Nation | Gold | Silver | Bronze | Total |
|---|---|---|---|---|---|
| 1 | 12 | 9 | 7 | 28 | |
| 2 | 7 | 8 | 3 | 18 | |
| 3 | 4 | 4 | 1 | 9 | |
| 4 | 3 | 4 | 1 | 8 | |
| 5 | 3 | 3 | 2 | 8 | |
| 6 | 3 | 1 | 3 | 7 | |
| 7 | 2 | 2 | 4 | 8 | |
| 8 | 1 | 2 | 1 | 4 | |
| 9 | 1 | 2 | 0 | 3 | |
| 10 | 1 | 0 | 4 | 5 | |
| 11 | 1 | 0 | 1 | 2 | |
| 1 | 0 | 1 | 2 | ||
| 1 | 0 | 1 | 2 | ||
| 14 | 1 | 0 | 0 | 1 | |
| 1 | 0 | 0 | 1 | ||
| 1 | 0 | 0 | 1 | ||
| 1 | 0 | 0 | 1 | ||
| 1 | 0 | 0 | 1 | ||
| 1 | 0 | 0 | 1 | ||
| 1 | 0 | 0 | 1 | ||
| 21 | 0 | 1 | 3 | 4 | |
| 0 | 1 | 3 | 4 | ||
| 23 | 0 | 1 | 1 | 2 | |
| 24 | 0 | 1 | 0 | 1 | |
| 0 | 1 | 0 | 1 | ||
| 0 | 1 | 0 | 1 | ||
| 0 | 1 | 0 | 1 | ||
| 0 | 1 | 0 | 1 | ||
| 0 | 1 | 0 | 1 | ||
| 0 | 1 | 0 | 1 | ||
| 0 | 1 | 0 | 1 | ||
| 0 | 1 | 0 | 1 | ||
| 33 | 0 | 0 | 2 | 2 | |
| 34 | 0 | 0 | 1 | 1 | |
| 0 | 0 | 1 | 1 | ||
| 0 | 0 | 1 | 1 | ||
| 0 | 0 | 1 | 1 | ||
| 0 | 0 | 1 | 1 | ||
| 0 | 0 | 1 | 1 | ||
| 0 | 0 | 1 | 1 | ||
| 0 | 0 | 1 | 1 | ||
| 0 | 0 | 1 | 1 | ||
| Totals (42 entries) | 47 | 47 | 47 | 141 | |
| Country | Gold | Silver | Bronze | Net Change |
|---|---|---|---|---|
| -6 | −3 | −2 | −11 | |
| 0 | −1 | 0 | −1 | |
| 0 | +1 | -1 | 0 | |
| 0 | +1 | -1 | 0 | |
| +1 | −1 | 0 | 0 | |
| +1 | −1 | 0 | 0 | |
| +1 | −1 | 0 | 0 | |
| +1 | 0 | -1 | 0 | |
| 0 | 0 | +1 | +1 | |
| 0 | 0 | +1 | +1 | |
| 0 | +1 | 0 | +1 | |
| 0 | +1 | 0 | +1 | |
| 0 | +2 | -1 | +1 | |
| 0 | +1 | +1 | +2 | |
| +1 | 0 | +2 | +3 |
On the entry lists prior to the competition, a total of 1943 athletes from 202 national teams were set to participate in the 2011 World Championships in Athletics.[17] The number of accredited athletes that actually participated at the event was 1848, while the total of countries represented was 204.[1]
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