Progress against the field
Between Dublin 2024 and Cardiff 2026, Derren Selvarajah lost 4:03 to the field.
The clock says 5:34 faster, but the races themselves got 9:37 quicker for everyone.
The biggest step was Cologne 2025 → Oslo 2025: 5:37 on the field in 169 days.
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.
Every race
8 races · 8 events
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Birmingham31 Oct 2026Doubles Open · Mixed1:39:29 PB486/560Beat 13%
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Istanbul1 Aug 2026Doubles Pro · Men1:27:01 PB98/108Beat 9%
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Cardiff29 Apr 2026Individual Open · Men1:31:19253/365Beat 31%
↑ 36 days after London Olympia 2026 0:44 better than the field Why ↓Close ↑
2:00 faster on the clock, and the race was 1:16 faster for everyone, so 0:44 of it was this athlete.
The fieldCompare these two →1:16 faster This athlete2:00 faster -
London Olympia24 Mar 2026Individual Open · Men1:33:19113/177Beat 36%
↑ 179 days after Oslo 2025 8:59 worse than the field Why ↓Close ↑
4:04 slower on the clock in a race that was 4:55 faster for everyone: 8:59 lost to the field.
The fieldCompare these two →4:55 faster This athlete4:04 slower -
Oslo26 Sep 2025Individual Open · Men1:29:15 PB208/319Beat 35%
↑ 169 days after Cologne 2025 5:37 better than the field Why ↓Close ↑
5:37 better than the field: 7:37 faster on the clock, against 2:00 faster for everyone.
The fieldCompare these two →2:00 faster This athlete7:37 faster -
Cologne10 Apr 2025Individual Open · Men1:36:52380/494Beat 23%
↑ 146 days after Dublin 2024 1:25 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:01 faster on the clock looks better than it was: the race was 1:26 faster for everyone, which leaves this 1:25 behind the field.
The fieldCompare these two →1:26 faster This athlete0:01 faster -
Dublin15 Nov 2024Individual Open · Men1:36:53427/545Beat 22%
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London26 Nov 2023Relay · Men1:17:3924/43Beat 44%