Progress against the field
Between Amsterdam 2026 and Heerenveen 2026, Freddy Mazereeuw pulled 13:55 ahead of the field.
Over the same races everyone got 3:55 quicker, so 17:50 faster on the clock looks better than it was.
The biggest step was Amsterdam 2026 → Rotterdam 2026: 13:52 on the field in 84 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
4 races · 3 events
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Heerenveen14 May 2026Doubles Open · Mixed1:46:12 PB764/808Beat 5%
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Heerenveen14 May 2026Individual Open · Men1:23:38 PB258/490Beat 47%
↑ 29 days after Rotterdam 2026 0:03 better than the field Why ↓Close ↑
1:50 faster on the clock, and the race was 1:47 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →1:47 faster This athlete1:50 faster -
Rotterdam15 Apr 2026Individual Open · Men1:25:28572/1192Beat 52%
↑ 84 days after Amsterdam 2026 13:52 better than the field Why ↓Close ↑
16:00 faster on the clock, and the race was 2:08 faster for everyone, so 13:52 of it was this athlete.
The fieldCompare these two →2:08 faster This athlete16:00 faster -
Amsterdam21 Jan 2026Individual Open · Men1:41:281405/1620Beat 13%