Progress against the field
From Taipei 2026 to Incheon 2026, 一哉 西川 got 1:40 faster than the field.
The clock says 3:43 faster, but the races themselves got 2:03 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. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
5 races · 4 events
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Chiba6 Aug 2026Individual Pro · Men1:21:17105/295Beat 64%
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Incheon15 May 2026Individual Open · Men1:09:01 PB59/905Beat 94%
↑ 76 days after Taipei 2026 1:40 better than the field Why ↓Close ↑
1:40 better than the field: 3:43 faster on the clock, against 2:03 faster for everyone.
The fieldCompare these two →2:03 faster This athlete3:43 faster -
Taipei28 Feb 2026Individual Open · Men1:12:4439/343Beat 89%
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Taipei28 Feb 2026Individual Pro · Men1:17:50 PB56/164Beat 66%
↑ 29 days after Osaka 2026 2:43 better than the field Why ↓Close ↑
2:43 better than the field: 5:21 faster on the clock, against 2:38 faster for everyone.
The fieldCompare these two →2:38 faster This athlete5:21 faster -
Osaka30 Jan 2026Individual Pro · Men1:23:11135/340Beat 60%