O'Neill vs Ledecky
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Ledecky wins: Dominance, Peak, Longevity, Honours, Statistics
O'Neill wins: no category outright
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Showing full careers. Pick a window to recalculate the selected period.
Category radar
Verdict
Ledecky leads in 5 of 5 weighted categories. Distance freestyle untouched for over a decade across four Olympic Games.
O'Neill — Insufficient verified career data to calculate a reliable GOAT Score.
Category breakdown
Season form · Form index per season
Career timeline · Form index per season
Cumulative output season by season — the shape of each career against the other.
GOAT pace tracker
Setting the pace at age 21
No verified birth date for O'Neill — shown in the pro-debut view instead.
Every career is cut at the season the athlete turned 21, so a rookie today is measured against exactly what a legend had banked by the same birthday.
Fan vote — data vs the people
What do you think?
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