It's Katie Ledecky against Summer McIntosh in the final of the 800-meter freestyle, probably the most anticipated race at the swimming world championships in Singapore.

Katie Ledecky has dominated the women's 800m freestyle for over a decade, but Canadian Summer McIntosh is on her tail, setting up a massive showdown.

Summer McIntosh and Katie Ledecky set up a showdown for the ages at swimming's world championships in Singapore when both ...

Katie Ledecky extended her 15-year win streak in the 1500m freestyle and broke career medal ties with Michael Phelps and Ryan ...

The American has owned the 800 freestyle for more than a decade, but the Canadian wunderkind is coming for her crown.