Progress against the field
Between Shanghai 2025 and Osaka 2026, NAOHITO SHIRAISHI lost 1:00:36 to the field.
Over the same races everyone got 1:10 quicker, so 59:26 slower on the clock looks better than it was.
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 Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
8 races · 8 events
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Chiba6 Aug 2026Individual Pro · Men2:28:36293/295Beat 1%
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Jakarta27 Jun 2026Individual Pro · Men2:31:52181/189Beat 4%
↑ 99 days after Bangkok 1 2026 27:34 worse than the field Why ↓Close ↑
27:34 behind the field: 24:02 slower on the clock, against 3:32 faster for everyone.
The fieldCompare these two →3:32 faster This athlete24:02 slower -
Bangkok 120 Mar 2026Individual Pro · Men2:07:50 PB392/444Beat 12%
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Taipei28 Feb 2026Doubles Open · Men1:40:12 PB435/527Beat 18%
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Osaka30 Jan 2026Individual Open · Men2:47:04506/511Beat 1%
↑ 41 days after Shenzhen 2025 29:41 worse than the field Why ↓Close ↑
28:30 slower on the clock in a race that was 1:11 faster for everyone: 29:41 lost to the field.
The fieldCompare these two →1:11 faster This athlete28:30 slower -
Shenzhen20 Dec 2025Individual Open · Men2:18:34866/928Beat 7%
↑ 28 days after Shanghai 2025 30:55 worse than the field Why ↓Close ↑
30:55 behind the field: 30:56 slower on the clock, against 0:01 slower for everyone.
The fieldCompare these two →0:01 slower This athlete30:56 slower -
Shanghai22 Nov 2025Individual Open · Men1:47:38 PB707/914Beat 23%
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Abu DhabiDate unknownIndividual Pro · MenDNF—