Katie Ledecky improves her own swimming world record in 1,500-meter freestyle to 15:27.71

KAZAN, Russia (AP) Katie Ledecky improves her own swimming world record in 1,500-meter freestyle to 15:27.71.

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide—from Peter King, Tom Verducci, Lee Jenkins, Andy Staples, Grant Wahl, and more—delivered straight to you, along with up-to-the-minute news and live scores.