Progress against the field
Between Glasgow 2023 and Madrid 2025, Sean Williamson lost 4:33 to the field.
Over the same races everyone got 12:42 quicker, so 8:09 faster on the clock looks better than it was.
The longest gap between two races compared here, 635 days between Glasgow 2024 and Madrid 2025, cost 9:35 on the field.
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
14 races · 12 events
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Barcelona14 May 2026Individual Pro · Men1:10:02152/618Beat 75%
↑ 64 days after Glasgow 2026 1:48 worse than the field Why ↓Close ↑
1:48 behind the field: 1:00 slower on the clock, against 0:48 faster for everyone.
The fieldCompare these two →0:48 faster This athlete1:00 slower -
Glasgow11 Mar 2026Doubles Pro · Men58:29 PB15/66Beat 77%
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Glasgow11 Mar 2026Individual Pro · Men1:09:0264/206Beat 69%
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Katowice21 Feb 2026Individual Pro · Men1:07:02 PB82/317Beat 74%
↑ 101 days after Dublin 2025 4:16 better than the field Why ↓Close ↑
5:33 faster on the clock, and the race was 1:17 faster for everyone, so 4:16 of it was this athlete.
The fieldCompare these two →1:17 faster This athlete5:33 faster -
Manchester21 Jan 2026Doubles Pro · Men1:02:3593/279Beat 67%
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Madrid27 Nov 2025Individual Open · Men1:06:50 PB64/1312Beat 95%
↑ 635 days after Glasgow 2024 9:35 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:37 faster on the clock, yet the race was 10:12 faster for everyone, so 9:35 was lost on the field.
The fieldCompare these two →10:12 faster This athlete0:37 faster -
Dublin12 Nov 2025Individual Pro · Men1:12:3552/115Beat 55%
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Paris9 Nov 2024Individual Pro · Men1:15:4157/186Beat 69%
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Birmingham25 Oct 2024Doubles Pro · Men1:04:519/73Beat 88%
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Glasgow2 Mar 2024Doubles Open · Men1:02:57 PB90/787Beat 89%
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Glasgow2 Mar 2024Individual Open · Men1:07:2794/1784Beat 95%
↑ 133 days after Birmingham 2023 0:30 better than the field Why ↓Close ↑
4:46 faster on the clock, and the race was 4:16 faster for everyone, so 0:30 of it was this athlete.
The fieldCompare these two →4:16 faster This athlete4:46 faster -
Birmingham21 Oct 2023Individual Open · Men1:12:13103/1182Beat 91%
↑ 252 days after Glasgow 2023 4:32 better than the field Why ↓Close ↑
The race was 1:46 slower for everyone and the clock still says 2:46 faster: 4:32 gained on the field.
The fieldCompare these two →1:46 slower This athlete2:46 faster -
Glasgow11 Feb 2023Individual Open · Men1:14:59242/974Beat 75%
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BudapestDate unknownIndividual Pro · Men1:08:0373/210Beat 65%