Katie Ledecky’s incredible streak at stake against emerging rival at U.S. Open

Katie Ledecky is undefeated in domestic, long-course freestyle races of 400 meters or longer since the 2012 Olympic Trials. That streak appears under threat at this week’s U.S. Open.

Ledecky is joined on the entry list, and in particular Thursday’s 400m freestyle, by 16-year-old Canadian phenom Summer McIntosh. Rarely does a head-to-head of this magnitude take place outside of major international meets. Read More