Progress against the field
From Amsterdam 2022 to Heerenveen 2026, the field gained 3:23 on Mark Osseweijer.
Over the same races everyone got 15:30 quicker, so 12:07 faster on the clock looks better than it was.
The longest gap between two races compared here, 468 days between Amsterdam 2024 and Amsterdam 2026, cost 3:22 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
8 races · 8 events
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Heerenveen14 May 2026Individual Open · Men1:25:33 PB285/490Beat 42%
↑ 113 days after Amsterdam 2026 1:40 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:53 faster on the clock looks better than it was: the race was 2:33 faster for everyone, which leaves this 1:40 behind the field.
The fieldCompare these two →2:33 faster This athlete0:53 faster -
Rotterdam15 Apr 2026Doubles Open · Mixed1:29:45370/560Beat 34%
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Amsterdam21 Jan 2026Individual Open · Men1:26:26286/570Beat 50%
↑ 468 days after Amsterdam 2024 3:22 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:50 faster on the clock looks better than it was: the race was 4:12 faster for everyone, which leaves this 3:22 behind the field.
The fieldCompare these two →4:12 faster This athlete0:50 faster -
Maastricht19 Sep 2025Doubles Open · Mixed1:18:51197/658Beat 70%
↑ 204 days after Rotterdam 2025, with Marie-Suzanne Assie 2:38 worse than the field Why ↓Close ↑
4:25 slower on the clock in a race that was 1:47 slower for everyone: 2:38 lost to the field.
The fieldCompare these two →1:47 slower This pair4:25 slower -
Rotterdam27 Feb 2025Doubles Open · Mixed1:14:26 PB149/707Beat 79%
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Amsterdam10 Oct 2024Individual Open · Men1:27:16834/1539Beat 46%
↑ 341 days after Amsterdam 2023 1:02 worse than the field Faster on the clock, behind the field Why ↓Close ↑
5:27 faster on the clock looks better than it was: the race was 6:29 faster for everyone, which leaves this 1:02 behind the field.
The fieldCompare these two →6:29 faster This athlete5:27 faster -
Amsterdam4 Nov 2023Individual Open · Men1:32:43630/1079Beat 42%
↑ 378 days after Amsterdam 2022 2:41 better than the field Why ↓Close ↑
2:41 better than the field: 4:57 faster on the clock, against 2:16 faster for everyone.
The fieldCompare these two →2:16 faster This athlete4:57 faster -
Amsterdam22 Oct 2022Individual Open · Men1:37:40421/561Beat 25%