Progress against the field
Derek Ku has dropped 40:22 behind the field from Shenzhen 2025 to Wuhan 2026.
Over the same races everyone got 3:12 quicker, so 37:10 slower on the clock looks better than it was.
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
16 races · 14 events
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Shenzhen15 Aug 2026Individual Open · Men1:41:07777/1284Beat 40%
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Chiba6 Aug 2026Individual Open · Men1:39:41399/769Beat 48%
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Hong Kong8 May 2026Individual Pro · Men1:40:32 PB221/301Beat 27%
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Wuhan11 Apr 2026Individual Open · Men2:02:18404/486Beat 17%
↑ 112 days after Shenzhen 2025 40:22 worse than the field Why ↓Close ↑
40:22 behind the field: 37:10 slower on the clock, against 3:12 faster for everyone.
The fieldCompare these two →3:12 faster This athlete37:10 slower -
Bangkok 120 Mar 2026Doubles Pro · Men1:21:33112/187Beat 40%
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Taipei28 Feb 2026Doubles Open · Men1:12:30 PB49/245Beat 80%
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Osaka30 Jan 2026Doubles Open · Mixed1:27:15 PB335/615Beat 46%
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Osaka30 Jan 2026Doubles Pro · Men1:16:58 PB71/122Beat 42%
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Shenzhen20 Dec 2025Individual Open · Men1:25:08 PB226/928Beat 76%
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Yokohama9 Aug 2025Individual Open · Men1:56:59590/718Beat 18%
↑ 14 days after Hong Kong 2025 4:31 better than the field Why ↓Close ↑
9:25 faster on the clock, and the race was 4:54 faster for everyone, so 4:31 of it was this athlete.
The fieldCompare these two →4:54 faster This athlete9:25 faster -
Hong Kong26 Jul 2025Doubles Open · Men2:25:58898/902Beat 0%
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Hong Kong26 Jul 2025Individual Open · Men2:06:241040/1186Beat 12%
↑ 427 days after Taipei 2024 28:46 worse than the field Why ↓Close ↑
25:34 slower on the clock in a race that was 3:12 faster for everyone: 28:46 lost to the field.
The fieldCompare these two →3:12 faster This athlete25:34 slower -
Bangkok24 May 2025Doubles Pro · Men1:33:06146/197Beat 26%
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Hong Kong22 Nov 2024Doubles Open · Men1:22:01257/544Beat 53%
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Taipei25 May 2024Individual Open · Men1:40:50178/290Beat 39%
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SingaporeDate unknownDoubles Pro · Men1:21:3458/136Beat 57%