In the trials, Klara Thormalm lowered her personal record by as much as 48 hundredths when she swam at 30.18.
In the semifinals, she improved it further when she came in fourth place with a time of 29.96.
She had the seventh best time in the two semifinals and now has to recharge for the final on Sunday night.
After the semis, she was really surprised by her own efforts.
- I did not think this.
I was very shocked but I am very happy, she says to SVT Sport.
See the interview with Klara Thormalm in the player above.