The men's 100 metre backstroke competition of the swimming events at the 2011 World Aquatics Championships was held on July 25 with the preliminary round and the semifinals and July 26 with the final.

Records Prior to the competition, the existing world and championship records were as follows. Name Nation Time Location DateWorld recordAaron Peirsol 51.94 IndianapolisJuly 8, 2009Championship recordAaron Peirsol 52.19 RomeAugust 2, 2009

Results

Heats 50 swimmer participated in 7 heats.

Rank Heat Lane Name Nationality Time Notes 1 7 4 Camille Lacourt Q 2 6 5 Jérémy Stravius Q 3 7 5 David Plummer Q 4 6 4 Liam Tancock Q 5 6 6 Stanislav Donets Q 6 5 6 Ben Treffers Q 7 7 8 Gareth Kean Q 8 5 4 Ryosuke Irie Q 9 7 3 Hayden Stoeckel Q 10 5 3 Nick Thoman Q 11 7 6 Aschwin Wildeboer Q 12 5 5 Helge Meeuw Q 13 7 7 Aristeidis Grigoriadis Q 14 5 2 Nick Driebergen Q 15 6 3 Junya Koga Q 16 4 1 Guy Barnea swimoff 16 6 1 Sun Xiaolei swimoff 18 4 5 Thiago Pereira 19 6 7 Mirco di Tora 20 6 2 Cheng Feiyi 21 7 2 Vitaly Borisov 22 4 7 Charles Francis 23 7 1 Daniel Bell 24 2 4 Omar Pinzón NR 25 5 8 Jonatan Kopelev 26 5 1 Chris Walker-Hebborn 27 4 4 Guilherme Guido 28 4 6 Radosław Kawęcki 29 5 7 Bastiaan Lijesen 30 4 2 Charl Crous 31 3 5 Gerhard Zandberg 32 4 8 Tobias Oriwol 33 4 3 Marcin Tarczyński 34 3 3 Péter Bernek 35 6 8 Park Seon-Kwan 36 3 1 Bradley Ally NR 37 3 6 Federico Grabich 38 3 4 Simon Sjödin 39 3 8 Matas Andriekus 40 3 7 Flori Lang 41 3 2 Abdullah Al-Tuwaini 42 2 3 Jean-François Schneiders NR 43 2 7 Heshan Unamboowe 44 2 5 Alex Hernandez Medina 45 2 6 Charles William Walker 46 1 4 Zane Jordan 47 1 5 Antonio Tong 48 2 1 Awse Ma'aya 49 2 2 Boris Kirillov 50 1 3 Andrey Molchanov

Swimoff As two swimmers had the same time in the heats at place 16 they had to participate in a swimoff to determine the last semifinal swimmer, it was held at 11:36.

Rank Lane Name Nationality Time Notes 1 5 Sun Xiaolei 54.20 Q 2 4 Guy Barnea 55.12

Semifinals The semifinals were held at 18:10.

Semifinal 1 Rank Lane Name Nationality Time Notes 1 4 Jérémy Stravius 52.76 Q 2 6 Ryosuke Irie 53.05 Q 3 7 Helge Meeuw 53.34 Q 4 2 Nick Thoman 53.49 Q 5 5 Liam Tancock 53.60 Q 6 3 Ben Treffers 53.87 7 1 Nick Driebergen 53.98 8 8 Sun Xiaolei 54.21

Semifinal 2 Rank Lane Name Nationality Time Notes 1 4 Camille Lacourt 53.09 Q 2 5 David Plummer 53.30 Q 3 6 Gareth Kean 53.69 Q 4 2 Hayden Stoeckel 53.70 5 7 Aschwin Wildeboer 54.03 6 3 Stanislav Donets 54.10 7 8 Junya Koga 54.16 8 1 Aristeidis Grigoriadis 54.22

Final The final was held at 19:06.

Rank Lane Name Nationality Time Notes 3 Camille Lacourt 52.76 4 Jérémy Stravius 52.76 5 Ryosuke Irie 52.98 4 7 Nick Thoman 53.01 5 6 David Plummer 53.04 6 1 Liam Tancock 53.25 7 2 Helge Meeuw 53.28 8 8 Gareth Kean 53.50 NR

References

External links 2011 World Aquatics Championships: Men's 100 metre backstroke start list, from OmegaTiming.com; retrieved 2011-07-23.