Katie Ledecky is considered arguably the best women's swimmer of all-time, and she continued her dominance at the World Championships on Saturday.

American star Katie Ledecky won her seventh world title in the women’s 800-meter freestyle on Saturday, fending off the challenges of Canadian sensation Summer McIntosh and Australia’s Lani Pallister.

Katie Ledecky remains a dominant force in competitive swimming. The Olympic swimmer, 28, won her seventh consecutive world title at the world championships in Singapore on Saturday, Aug. 2, in the 800-meter freestyle, besting other top swimmers including Australia’s Lani Pallister and Canada’s Summer McIntosh, 18.