Progress against the field
Calvin do Rosario has gained 16:56 on the field from Rotterdam 2024 to Maastricht 2026.
The clock says 31:58 faster, but the races themselves got 15:02 quicker for everyone.
531 days between Rotterdam 2024 and Maastricht 2025 is the longest gap compared here, and the second race was 23:05 better than 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. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
11 races · 9 events
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Maastricht19 Sep 2026Individual Open · Men1:06:3359/1119Beat 95%
↑ 128 days after Heerenveen 2026 0:43 worse than the field Why ↓Close ↑
2:09 slower on the clock in a race that was 1:26 slower for everyone: 0:43 lost to the field.
The fieldCompare these two →1:26 slower This athlete2:09 slower -
Heerenveen14 May 2026Individual Open · Men1:04:24 PB40/966Beat 96%
↑ 167 days after Utrecht 2025 2:23 worse than the field Faster on the clock, behind the field Why ↓Close ↑
4:44 faster on the clock looks better than it was: the race was 7:07 faster for everyone, which leaves this 2:23 behind the field.
The fieldCompare these two →7:07 faster This athlete4:44 faster -
Rotterdam15 Apr 2026Doubles Pro · Men58:28 PB48/385Beat 88%
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Rotterdam15 Apr 2026Individual Pro · Men1:13:3097/348Beat 72%
↑ 84 days after Amsterdam 2026 4:00 worse than the field Why ↓Close ↑
4:00 behind the field: 3:41 slower on the clock, against 0:19 faster for everyone.
The fieldCompare these two →0:19 faster This athlete3:41 slower -
Amsterdam21 Jan 2026Relay · Men52:461/51Beat 98%
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Amsterdam21 Jan 2026Individual Pro · Men1:09:49 PB37/107Beat 65%
↑ 257 days after Heerenveen 2025 13:55 better than the field Why ↓Close ↑
13:55 better than the field: 19:07 faster on the clock, against 5:12 faster for everyone.
The fieldCompare these two →5:12 faster This athlete19:07 faster -
Utrecht28 Nov 2025Individual Open · Men1:09:0849/1337Beat 96%
↑ 70 days after Maastricht 2025 3:03 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:33 faster on the clock looks better than it was: the race was 3:36 faster for everyone, which leaves this 3:03 behind the field.
The fieldCompare these two →3:36 faster This athlete0:33 faster -
Maastricht19 Sep 2025Individual Open · Men1:09:4175/1352Beat 95%
↑ 531 days after Rotterdam 2024 23:05 better than the field Why ↓Close ↑
28:50 faster on the clock, and the race was 5:45 faster for everyone, so 23:05 of it was this athlete.
The fieldCompare these two →5:45 faster This athlete28:50 faster -
Heerenveen9 May 2025Individual Pro · Men1:28:56147/216Beat 32%
↑ 71 days after Rotterdam 2025 8:05 worse than the field Why ↓Close ↑
4:53 slower on the clock in a race that was 3:12 faster for everyone: 8:05 lost to the field.
The fieldCompare these two →3:12 faster This athlete4:53 slower -
Rotterdam27 Feb 2025Individual Pro · Men1:24:0390/196Beat 54%
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Rotterdam6 Apr 2024Individual Open · Men1:38:31961/1380Beat 30%