Progress against the field
Between Malaga 2024 and Rome 2025, Tom Jackson lost 0:40 to the field.
Over the same races everyone got 8:26 quicker, so 7:46 faster on the clock looks better than it was.
The longest gap between two races compared here, 238 days between Malaga 2024 and Stockholm 2024, cost 5:18 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
11 races · 10 events
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Birmingham31 Oct 2026Doubles Open · Men1:10:20 PB250/605Beat 59%
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Rome26 Sep 2025Individual Open · Men1:32:15994/1367Beat 27%
↑ 133 days after Berlin 2025 1:57 better than the field Why ↓Close ↑
The race was 0:56 slower for everyone and the clock still says 1:01 faster: 1:57 gained on the field.
The fieldCompare these two →0:56 slower This athlete1:01 faster -
Cardiff30 May 2025Doubles Open · Men1:14:44167/269Beat 38%
↑ 79 days after Glasgow 2025, with Leon Davies 8:21 better than the field Why ↓Close ↑
9:49 faster on the clock, and the race was 1:28 faster for everyone, so 8:21 of it was this pair.
The fieldCompare these two →1:28 faster This pair9:49 faster -
Berlin16 May 2025Individual Open · Men1:33:16640/748Beat 14%
↑ 78 days after Rotterdam 2025 12:35 worse than the field Why ↓Close ↑
12:35 behind the field: 8:46 slower on the clock, against 3:49 faster for everyone.
The fieldCompare these two →3:49 faster This athlete8:46 slower -
Glasgow12 Mar 2025Doubles Open · Men1:24:33907/1105Beat 18%
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Rotterdam27 Feb 2025Individual Open · Men1:24:30 PB250/584Beat 57%
↑ 82 days after Stockholm 2024 15:16 better than the field Why ↓Close ↑
18:18 faster on the clock, and the race was 3:02 faster for everyone, so 15:16 of it was this athlete.
The fieldCompare these two →3:02 faster This athlete18:18 faster -
Manchester24 Jan 2025Doubles Open · Men1:20:16478/616Beat 22%
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Stockholm7 Dec 2024Individual Open · Men1:42:48555/651Beat 15%
↑ 238 days after Malaga 2024 5:18 worse than the field Why ↓Close ↑
5:18 behind the field: 2:47 slower on the clock, against 2:31 faster for everyone.
The fieldCompare these two →2:31 faster This athlete2:47 slower -
Birmingham25 Oct 2024Doubles Open · Men1:19:02650/875Beat 26%
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Birmingham25 Oct 2024Doubles Open · Men1:17:48316/441Beat 28%
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Malaga13 Apr 2024Individual Open · Men1:40:01466/547Beat 15%