Progress against the field
From Amsterdam 2026 to Rotterdam 2026, the field gained 4:43 on Martijn Lieben.
Over the same races everyone got 2:08 quicker, so 2:35 slower on the clock looks better than it was.
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
4 races · 4 events
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Heerenveen14 May 2026Doubles Open · Men1:15:15 PB292/494Beat 41%
↑ 370 days after Heerenveen 2025, with Claudio Jacobs 7:12 better than the field Why ↓Close ↑
9:58 faster on the clock, and the race was 2:46 faster for everyone, so 7:12 of it was this pair.
The fieldCompare these two →2:46 faster This pair9:58 faster -
Rotterdam15 Apr 2026Individual Open · Men1:33:04801/1192Beat 33%
↑ 84 days after Amsterdam 2026 4:43 worse than the field Why ↓Close ↑
2:35 slower on the clock in a race that was 2:08 faster for everyone: 4:43 lost to the field.
The fieldCompare these two →2:08 faster This athlete2:35 slower -
Amsterdam21 Jan 2026Individual Open · Men1:30:29 PB1122/1620Beat 31%
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Heerenveen9 May 2025Doubles Open · Men1:25:13457/529Beat 14%