Progress against the field
Between Amsterdam 2026 and Rotterdam 2026, Jeroen Van Duijn and Alex Tiesma kept pace with the field.
The clock says 1:03 faster, but the races themselves got 0:50 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.
Every race
6 races · 6 events
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Rotterdam15 Apr 2026Doubles Pro · Men56:50 PB29/385Beat 93%
↑ 84 days after Amsterdam 2026, with Alex Tiesma 0:13 better than the field Why ↓Close ↑
1:03 faster on the clock, and the race was 0:50 faster for everyone, so 0:13 of it was this pair.
The fieldCompare these two →0:50 faster This pair1:03 faster -
Amsterdam21 Jan 2026Doubles Pro · Men57:5310/94Beat 89%
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Amsterdam10 Oct 2024Doubles Open · Men55:22 PB7/855Beat 99%
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Rotterdam6 Apr 2024Doubles Pro · Men1:09:4935/101Beat 65%
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Amsterdam4 Nov 2023Doubles Open · Men55:443/411Beat 99%
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World Championships ManchesterDate unknownDoubles Open · Men59:4649/250Beat 80%