Progress against the field
Between Boston 2025 and Phoenix 2026, Jena Serpico and Jessica McCormick kept pace with the field.
The clock says 2:30 faster, but the races themselves got 2:39 quicker for everyone.
How this is worked out ⓘ
A finish time moves for two reasons: the athlete, and the race — its course, its floor, its day. For each pair of races in a row in one category, we take everyone who raced both and use the middle of how much they moved (the median) as "the race". Whatever is left is the athlete. Doubles are compared only when the same two people raced both, and told as the pair's; relays are left out. A pair with fewer than 15 athletes in common is not shown.
Every race
5 races · 4 events
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Phoenix29 Jan 2026Relay · Mixed1:01:559/37Beat 76%
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Phoenix29 Jan 2026Doubles Open · Women1:09:37 PB28/529Beat 95%
↑ 125 days after Boston 2025, with Jessica McCormick 0:09 worse than the field Why ↓Close ↑
2:30 faster on the clock, and the race was 2:39 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →2:39 faster This pair2:30 faster -
Boston26 Sep 2025Doubles Open · Women1:12:0786/1424Beat 94%
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Las Vegas1 Feb 2025Doubles Open · Women1:24:0397/307Beat 68%
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Chicago11 Nov 2023Doubles Open · Women1:19:4945/142Beat 68%