Sjöström finished in an impressive 54.61, half a second faster than the number two, China’s Lu Ying.
“It’s pretty awesome, actually. Apparently I can swim that fast. It feels incredible. I was surprised when I saw the time,” Sjöström told Swedish Television.
The Swedish star swimmer got the fastest result in the semi-final, but Denmark’s Jeanette Ottesen was in the lead in the final in lane five. But, like many times before, Sjöström sped up in the final leg and finished far ahead of her opponents.
In second place was Chienese Lu Ying, who finished at 55.25, while Ottesen came third, clocking in at 55.32.