The women's 100 metre butterfly competition of the swimming events at the 2011 World Aquatics Championships took place on 24 and 25 July. The heats and semifinals took place on 24 July and the final was held on 25 July.

Records Prior to the competition, the existing world and championship records were as follows. Name Nation Time Location DateWorld record Championship recordSarah Sjöström56.06Rome27 July 2009

Results

Heats

47 swimmers participated in 6 heats, qualified swimmers are listed:

Rank Heat Lane Name Nationality Time Notes 1 5 5 Dana Vollmer Q 2 6 4 Alicia Coutts Q 3 4 5 Jemma Lowe Q 4 4 2 Jessicah Schipper Q 5 6 2 Lu Ying Q 6 4 4 Sarah Sjöström Q 7 4 3 Ellen Gandy Q 7 5 6 Jeanette Ottesen Q 9 6 5 Liu Zige Q 10 5 4 Christine Magnuson Q 11 5 3 Inge Dekker Q 12 4 6 Katerine Savard Q 13 6 6 Yuka Kato Q 14 6 3 Therese Alshammar Q 15 5 2 Tao Li Q 15 6 8 Irina Bespalova Q 17 4 7 Vanessa Mohr 17 4 8 Sina Sutter 19 2 3 Otylia Jędrzejczak 20 5 8 Audrey Lacroix 21 5 1 Daynara de Paula 22 6 7 Kristel Vourna 23 3 6 Judit Ignacio Sorribes 24 5 7 Amit Ivry 25 3 4 Natsumi Hoshi 26 3 2 Hannah Wilson 26 3 8 Triin Aljand 28 2 5 Ingvild Snildal 29 2 4 Birgit Koschischek 30 2 6 Katarina Listopadova 31 3 1 Kimberly Buys 32 6 1 Sara Oliveira 33 3 5 Sara Isaković 34 3 3 Ilaria Bianchi 35 2 2 Rita Medrano 36 4 1 Eszter Dara 37 2 7 Se-Hyeon An 38 2 1 Iris Rosenberger 39 3 7 Sophia Batchelor 40 1 4 Jasmine Alkhaldi 41 1 3 Loreen Whitfield 42 1 5 Marie Laura Meza 43 1 6 Noel Borshi 43 1 7 Dalia Torrez 45 1 1 Simona Muccioli 46 1 2 Dorian McMenemy 47 1 8 Debra Daniel

Reserve place swimoff As two swimmers had the same time in the heats at place 17 they had to participate in a swimoff to determine the first semifinal reserve swimmer.

Rank Lane Name Nationality Time Notes 1 4 Vanessa Mohr 58.66 2 5 Sina Sutter 59.47

Semifinals The semifinals were held on 24 July at 18:00.

Semifinal 1 Rank Lane Name Nationality Time Notes 1 3 Sarah Sjöström 57.29 Q 2 4 Alicia Coutts 57.41 Q 3 5 Jessicah Schipper 57.95 Q 4 7 Katerine Savard 58.07 5 1 Therese Alshammar 58.20 6 6 Jeanette Ottesen 58.24 7 2 Christine Magnuson 58.59 8 8 Irina Bespalova 59.02

Semifinal 2 Rank Lane Name Nationality Time Notes 1 4 Dana Vollmer 56.47 Q, AM 2 3 Lu Ying 57.18 Q 3 5 Jemma Lowe 57.57 Q 4 2 Liu Zige 57.85 Q 5 6 Ellen Gandy 57.97 Q 6 7 Inge Dekker 58.70 7 1 Yuka Kato 58.71 8 8 Tao Li 58.78

Final The final was held at 18:02. Rank Lane Name Nationality Time Notes 4 Dana Vollmer 56.87 6 Alicia Coutts 56.94 5 Lu Ying 57.06 4 3 Sarah Sjöström 57.38 5 8 Ellen Gandy 57.55 6 7 Liu Zige 57.57 7 1 Jessicah Schipper 57.95 8 2 Jemma Lowe 57.96

References

External links 2011 World Aquatics Championships: Women's 100 metre butterfly entry list, from OmegaTiming.com; retrieved 2011-07-23.