Pakistan, July 29 -- Katie Ledecky has ceded a tiny bit of ground in other events, but she's still unbeatable in the 1,500-meter freestyle.

She won it again Tuesday in the swimming world championships in Singapore, finishing in 15 minutes, 26.44 seconds. Simona Quadarella of Italy took silver in 15:31.79 - a European record - with bronze for Lani Pallister of Australia in 15:41.18 in a very quick-paced race.

"I was just trying to get out fast, but comfortable enough that I could go from there," Ledecky said. "I'm happy with the time and happy with the swim."

"I love this race," she added. "It was the race I broke my first world record in 2013. Lots of great races over the years."

Ledecky was ahead of her world-record pace through 1,25...