Progress against the field
From Amsterdam 2024 to Heerenveen 2026, Rudmer de Groot and Hedwich de Groot got 18:34 faster than the field.
Over the same races everyone got 7:58 quicker, so 26:32 faster on the clock looks better than it was.
257 days between Heerenveen 2025 and Amsterdam 2026 is the longest gap compared here, and the second race was 1:14 behind 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.
Every race
4 races · 4 events
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Heerenveen14 May 2026Doubles Open · Mixed1:05:45 PB59/808Beat 93%
↑ 113 days after Amsterdam 2026, with Hedwich de Groot 2:58 better than the field Why ↓Close ↑
2:58 better than the field: 4:43 faster on the clock, against 1:45 faster for everyone.
The fieldCompare these two →1:45 faster This pair4:43 faster -
Amsterdam21 Jan 2026Doubles Open · Mixed1:10:28106/506Beat 79%
↑ 257 days after Heerenveen 2025, with Hedwich de Groot 1:14 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:28 faster on the clock, yet the race was 3:42 faster for everyone, so 1:14 was lost on the field.
The fieldCompare these two →3:42 faster This pair2:28 faster -
Heerenveen9 May 2025Doubles Open · Mixed1:12:5680/492Beat 84%
↑ 211 days after Amsterdam 2024, with Hedwich de Groot 16:50 better than the field Why ↓Close ↑
19:21 faster on the clock, and the race was 2:31 faster for everyone, so 16:50 of it was this pair.
The fieldCompare these two →2:31 faster This pair19:21 faster -
Amsterdam10 Oct 2024Doubles Open · Mixed1:32:17506/618Beat 18%