Since winning gold at the 2012 Olympics at just 15 years old, Ledecky has won the 800 free at all five editions of the LC World Championships since then.
Bella Sims is the top-ranked recruit in next season's incoming freshman class in the NCAA, as the Olympian has the potential to win multiple NCAA titles.
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16-year-old Summer McIntosh swam a new personal best in the 100 back on Saturday in Orlando that now ranks her as the fastest Canadian ever at that age.