Progress against the field
Between Birmingham 2023 and Vienna 2025, Simon Derby lost 2:06 to the field.
Over the same races everyone got 11:11 quicker, so 9:05 faster on the clock looks better than it was.
231 days between Berlin 2024 and Stockholm 2024 is the longest gap compared here, and the second race was 1:03 better than 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
20 races · 18 events
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Birmingham31 Oct 2026Doubles Pro · Men1:00:20141/476Beat 70%
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Stockholm18 Jun 2026Individual Pro · Men1:12:32515/767Beat 33%
↑ 218 days after Dublin 2025 4:10 worse than the field Why ↓Close ↑
4:10 behind the field: 4:33 slower on the clock, against 0:23 slower for everyone.
The fieldCompare these two →0:23 slower This athlete4:33 slower -
Poznan13 Dec 2025Doubles Pro · Men1:02:1045/157Beat 71%
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Dublin12 Nov 2025Individual Pro · Men1:07:5936/147Beat 76%
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Gdansk12 Oct 2025Doubles Open · Men52:32 PB2/279Beat 99%
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Gdansk12 Oct 2025Doubles Pro · Men55:09 PB4/72Beat 94%
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Heerenveen9 May 2025Individual Pro · Men1:08:1519/216Beat 91%
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Malaga21 Mar 2025Individual Pro · Men1:08:1533/194Beat 83%
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Vienna22 Feb 2025Individual Open · Men1:03:37138/1356Beat 90%
↑ 77 days after Stockholm 2024 0:58 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:17 faster on the clock looks better than it was: the race was 2:15 faster for everyone, which leaves this 0:58 behind the field.
The fieldCompare these two →2:15 faster This athlete1:17 faster -
Stockholm7 Dec 2024Individual Open · Men1:04:5436/651Beat 95%
↑ 231 days after Berlin 2024 1:03 better than the field Slower on the clock, ahead of the field Why ↓Close ↑
3:52 slower on the clock in a race that was 4:55 slower for everyone: 1:03 gained on the field, which the clock hides.
The fieldCompare these two →4:55 slower This athlete3:52 slower -
Dublin15 Nov 2024Individual Pro · Men1:05:15 PB11/114Beat 90%
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Birmingham25 Oct 2024Doubles Open · Men54:001/875Beat 100%
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Milan19 Oct 2024Doubles Open · Men55:271/572Beat 100%
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Berlin20 Apr 2024Individual Open · Men1:01:02 PB27/953Beat 97%
↑ 28 days after Copenhagen 2024 3:08 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:43 faster on the clock looks better than it was: the race was 4:51 faster for everyone, which leaves this 3:08 behind the field.
The fieldCompare these two →4:51 faster This athlete1:43 faster -
Copenhagen23 Mar 2024Doubles Pro · Men55:565/61Beat 92%
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Copenhagen23 Mar 2024Individual Open · Men1:02:4523/686Beat 97%
↑ 21 days after Glasgow 2024 1:28 better than the field Why ↓Close ↑
1:28 better than the field: 3:12 faster on the clock, against 1:44 faster for everyone.
The fieldCompare these two →1:44 faster This athlete3:12 faster -
Glasgow2 Mar 2024Individual Open · Men1:05:5760/1784Beat 97%
↑ 126 days after Dublin 2023 0:16 better than the field Why ↓Close ↑
0:16 better than the field: 8:10 faster on the clock, against 7:54 faster for everyone.
The fieldCompare these two →7:54 faster This athlete8:10 faster -
Dublin28 Oct 2023Individual Open · Men1:14:0739/777Beat 95%
↑ 7 days after Birmingham 2023 0:47 worse than the field Why ↓Close ↑
0:47 behind the field: 1:25 slower on the clock, against 0:38 slower for everyone.
The fieldCompare these two →0:38 slower This athlete1:25 slower -
Birmingham21 Oct 2023Individual Open · Men1:12:42116/1182Beat 90%
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World Championships NiceDate unknownIndividual Pro · Men1:11:44345/830Beat 58%