Progress against the field
From Las Vegas 2026 to Boston 2026, David Delfino and Arielle Delfino got 1:52 faster than the field.
Over the same races everyone got 4:02 quicker, so 5:54 faster on the clock looks better than it was.
The largest gain on the field came from New York 2026 → Boston 2026: 2:40 in 133 days.
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. The summary above covers Doubles Open · Mixed, with Arielle Delfino, the one raced most; every comparison is in the list below.
Every race
6 races · 5 events
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Boston8 Oct 2026Doubles Open · Mixed1:15:36 PB74/263Beat 72%
↑ 133 days after New York 2026, with Arielle Delfino 2:40 better than the field Why ↓Close ↑
2:40 better than the field: 4:49 faster on the clock, against 2:09 faster for everyone.
The fieldCompare these two →2:09 faster This pair4:49 faster -
Washington DC3 Sep 2026Doubles Open · Men1:04:39 PB13/258Beat 95%
↑ 98 days after New York 2026, with Aaron Reverdes 2:40 better than the field Why ↓Close ↑
2:40 better than the field: 7:45 faster on the clock, against 5:05 faster for everyone.
The fieldCompare these two →5:05 faster This pair7:45 faster -
New York28 May 2026Doubles Open · Mixed1:20:2593/364Beat 75%
↑ 97 days after Las Vegas 2026, with Arielle Delfino 0:48 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:05 faster on the clock looks better than it was: the race was 1:53 faster for everyone, which leaves this 0:48 behind the field.
The fieldCompare these two →1:53 faster This pair1:05 faster -
New York28 May 2026Doubles Open · Men1:12:2480/365Beat 78%
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Las Vegas20 Feb 2026Doubles Open · Mixed1:21:30766/2139Beat 64%
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Boston26 Sep 2025Doubles Open · Mixed1:36:461040/1259Beat 17%