Kalisz vs Phelps
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Phelps wins: Dominance, Peak, Longevity, Honours, Statistics
Kalisz wins: no category outright
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Showing full careers. Pick a window to recalculate the selected period.
Category radar
Verdict
Phelps leads in 5 of 5 weighted categories. 23 Olympic golds across five Games — the most decorated Olympian in history.
Kalisz — 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 Kalisz — 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?
0 commentsMake your case for Kalisz vs Phelps. The scoring is published in full — if you can point at the pillar or the weight you disagree with, we read it. Read the methodology paper.