Watch Katie Ledecky shatter an NCAA record in the 1000 free

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The world's best swimmer isn't going easy on her new college competition. Stanford freshman and five-time Olympic gold medalist Katie Ledecky broke an NCAA record and a quarter-century old Stanford pool record with a blazing 9:10.49 in the 1000 free during a dual meet against college swimming power Texas.

The NCAA mark was set last year at the ACC championships by UVA Olympian Leah Smith, who won a relay gold and individual bronze in Rio. Ledecky broke her mark by 10 seconds and, more impressively, lowered the Stanford pool record, which had been set in 1989 by America's previous greatest distance swimmer, Janet Evans, by more than 20 seconds.

Junior Simone Manuel, the surprise gold medalist in the 100 free in Rio, set another pool record in the 50 free, blazing to a 22.06.