Sarah Sjöström
World records (50 m)

No.
Event
Time
Date
Meet
Location
Age
1
100 m butterfly
56.44
26 July 2009
World Championships
Rome, Italy
15
2
100 m butterfly (2)
56.06
27 July 2009
World Championships
Rome, Italy
15
3
50 m butterfly
24.43
5 July 2014
Swedish Championships
Borås, Sweden
20
4
100 m butterfly (3)
55.74
2 August 2015
World Championships
Kazan, Russia
21
5
100 m butterfly (4)
55.64
3 August 2015
World Championships
Kazan, Russia
21
6
100 m butterfly (5)
55.48
7 August 2016
Olympic Games
Rio de Janeiro, Brazil
22
7
100 m freestyle
51.71
23 July 2017
World Championships
Budapest, Hungary
23
8
50 m freestyle
23.67
29 July 2017
World Championships
Budapest, Hungary
23

Question: In which swimming event did Sarah Sjöström improve her world record time?
Answer: In the 100 m butterfly, Sarah Sjöström improved her world record time to 56.06.