The Swedish star won both the 50 metres free and 50 butterfly, and took note of four straight wins over the weekend, after Saturday's victories in the 100 butterfly and 100 free.
In Sunday's tävlingsavslutning swam Sjöström 50 free at the time 23,97 – just six hundredths from her own världsårsbästa.
" I am very pleased with the time, it's for 24 seconds. I feel great, " said Sjöström to Eurosport, according to SVT.
put the 25-year-old is just that, new världsårsbästa, with the time 25,32 – two hundredths better than his previous great results.
this Weekend's victories gave Sjöström equivalent to more than 400 000 sek in prize money. The next race in the lucrative Champions Swim Series rolls into Indianapolis, the united states, about three weeks.
Read more: Double wins for Sjöström in Budapest