Progress against the field
Between Rotterdam 2025 and Heerenveen 2026, Ronald Zegwaard and Wim Mackaaij lost 11:18 to the field.
The clock says 2:52 slower, but the races themselves got 8:26 quicker for everyone.
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 Doubles Open · Men, with Wim Mackaaij, the one raced most; every comparison is in the list below.
Every race
9 races · 9 events
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Heerenveen14 May 2026Doubles Open · Men1:16:09280/535Beat 48%
↑ 29 days after Rotterdam 2026, with Wim Mackaaij 0:59 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:31 faster on the clock, yet the race was 1:30 faster for everyone, so 0:59 was lost on the field.
The fieldCompare these two →1:30 faster This pair0:31 faster -
Rotterdam15 Apr 2026Doubles Open · Men1:16:40388/674Beat 42%
↑ 138 days after Utrecht 2025, with Wim Mackaaij 0:24 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:38 faster on the clock, yet the race was 3:02 faster for everyone, so 0:24 was lost on the field.
The fieldCompare these two →3:02 faster This pair2:38 faster -
Utrecht28 Nov 2025Doubles Open · Men1:19:18583/879Beat 34%
↑ 70 days after Maastricht 2025, with Wim Mackaaij 2:04 worse than the field Why ↓Close ↑
2:04 behind the field: 0:47 slower on the clock, against 1:17 faster for everyone.
The fieldCompare these two →1:17 faster This pair0:47 slower -
Maastricht19 Sep 2025Doubles Open · Men1:18:31528/821Beat 36%
↑ 133 days after Heerenveen 2025, with Wim Mackaaij 8:10 worse than the field Why ↓Close ↑
7:06 slower on the clock in a race that was 1:04 faster for everyone: 8:10 lost to the field.
The fieldCompare these two →1:04 faster This pair7:06 slower -
Heerenveen9 May 2025Doubles Open · Men1:11:25 PB184/529Beat 65%
↑ 71 days after Rotterdam 2025, with Wim Mackaaij 0:19 better than the field Why ↓Close ↑
0:19 better than the field: 1:52 faster on the clock, against 1:33 faster for everyone.
The fieldCompare these two →1:33 faster This pair1:52 faster -
Rotterdam27 Feb 2025Doubles Open · Men1:13:17274/733Beat 63%
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Hamburg2 Nov 2024Doubles Open · Men1:17:02400/700Beat 43%
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Rotterdam6 Apr 2024Doubles Open · Men1:14:43271/722Beat 63%
↑ 77 days after Maastricht 2024, with Wim Mackaaij 3:08 better than the field Why ↓Close ↑
3:08 better than the field: 5:18 faster on the clock, against 2:10 faster for everyone.
The fieldCompare these two →2:10 faster This pair5:18 faster -
Maastricht20 Jan 2024Doubles Open · Men1:20:01183/288Beat 37%