Katie Ledecky says 15-year-old Katie Grimes is the future, and the future is now

When Katie Grimes finished third in the 1,500-meter freestyle Wednesday at the U.S. Olympic swimming trials, establishing the relatively unknown 15-year-old as a swimmer worth keeping tabs on, Katie Ledecky threw in her support.

“You’re the future,” Ledecky, a five-time Olympic gold medalist, told Grimes.

Ledecky had to amend her ...