The Women's 50 metre butterfly competition at the 2017 World Championships was held on 28 and 29 July 2017.Schedule Start list

Records Prior to the competition, the existing world and championship records were as follows.

The following new records were set during this competition. Date Event Name Nationality Time Record 29 July Final Sarah Sjöström 24.60 CR

Results Heats The heats were held on 28 July at 09:56.Heats results

Rank Heat Lane Name Nationality Time Notes 1 7 4 25.25 Q 2 7 5 25.65 Q 3 6 4 25.72 Q 4 7 2 25.73 Q, NR 5 5 4 25.74 Q 5 7 1 25.74 Q, AF 7 6 2 25.79 Q, NR 8 6 3 25.81 Q 9 5 5 25.82 Q, NR 10 6 5 25.87 Q 11 5 6 25.88 Q 12 7 6 25.91 Q 13 6 7 26.00 Q 14 7 3 26.03 Q 15 5 2 26.24 Q 16 5 3 Lu Ying 26.34 Q 17 7 7 Zhang Yufei 26.40 18 6 6 26.49 19 6 1 26.51 20 7 8 26.55 21 6 0 26.61 22 5 1 26.65 22 6 9 Park Ye-rin 26.65 22 6 8 26.65 25 5 7 26.81 26 4 3 26.88 27 4 6 26.89 28 7 9 26.90 29 7 0 26.94 30 4 2 26.95 NR 31 5 9 27.15 32 4 4 27.23 33 4 1 27.35 34 4 8 27.36 35 5 8 27.37 36 4 7 Chan Kin Lok 27.47 37 3 4 27.78 NR 38 4 0 27.97 NR 39 3 5 28.22 39 3 6 28.22 NR 41 4 9 28.41 42 2 0 28.48 43 3 3 28.51 44 2 1 29.13 45 1 4 30.02 NR 45 3 7 30.02 47 3 2 30.18 48 2 6 30.77 49 2 4 30.89 NR 50 3 8 31.77 51 2 5 Hemthon Vitiny 32.39 NR 52 3 9 32.61 53 2 3 33.05 NR 54 1 3 33.06 55 3 0 33.43 56 2 9 33.55 NR 57 2 7 34.09 58 2 2 35.69 NR 59 2 8 42.12 NR 1 5 3 1 4 5 5 0

Semifinals The semifinals were held on 28 July at 18:46.Semifinals results

Semifinal 1 Rank Lane Name Nationality Time Notes 1 4 Kelsi Worrell 25.57 Q 2 6 Mélanie Henique 25.63 Q, NR 3 2 Penny Oleksiak 25.66 Q, NR 4 5 Aliena Schmidtke 25.68 Q, NR 5 3 Farida Osman 25.73 Q, AF 6 7 Holly Barratt 25.76 7 8 Lu Ying 25.79 8 1 Maaike de Waard 25.89

Semifinal 2 Rank Lane Name Nationality Time Notes 1 4 Sarah Sjöström 25.30 Q 2 3 Ranomi Kromowidjojo 25.67 Q 3 2 Kimberly Buys 25.70 Q, NR 4 7 Emilie Beckmann 25.77 5 5 Rikako Ikee 25.90 6 1 Aleksandra Urbańczyk 25.94 7 6 Béryl Gastaldello 26.01 8 8 Silvia di Pietro 26.06

Final The final was held on 29 July at 17:32.Final results

Rank Lane Name Nationality Time Notes 4 Sarah Sjöström 24.60 CR 2 Ranomi Kromowidjojo 25.38 8 Farida Osman 25.39 AF 4 5 Kelsi Worrell 25.48 AM 5 6 Penny Oleksiak 25.62 NR 6 3 Mélanie Henique 25.76 7 1 Kimberly Buys 25.78 8 7 Aliena Schmidtke 26.08

References