Progress against the field
Between Johannesburg I 2025 and Cape Town 1 2026, Kerry van Zyl and Pierre Van Zyl lost 4:44 to the field.
Over the same races everyone got 10:51 quicker, so 6:07 faster 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 Doubles Open · Mixed, with Pierre Van Zyl, the one raced most; every comparison is in the list below.
Every race
5 races · 5 events
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Johannesburg30 May 2026Doubles Open · Women1:22:14 PB108/1061Beat 90%
↑ 182 days after Johannesburg 2025, with Natasha Buitendag 4:10 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:54 faster on the clock, yet the race was 7:04 faster for everyone, so 4:10 was lost on the field.
The fieldCompare these two →7:04 faster This pair2:54 faster -
Cape Town 13 Apr 2026Doubles Open · Mixed1:22:56 PB108/302Beat 64%
↑ 258 days after Cape Town 2025, with Pierre Van Zyl 0:57 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:28 faster on the clock, yet the race was 3:25 faster for everyone, so 0:57 was lost on the field.
The fieldCompare these two →3:25 faster This pair2:28 faster -
Johannesburg29 Nov 2025Doubles Open · Women1:25:0872/714Beat 90%
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Cape Town19 Jul 2025Doubles Open · Mixed1:25:24282/547Beat 48%
↑ 140 days after Johannesburg I 2025, with Pierre Van Zyl 3:47 worse than the field Faster on the clock, behind the field Why ↓Close ↑
3:39 faster on the clock, yet the race was 7:26 faster for everyone, so 3:47 was lost on the field.
The fieldCompare these two →7:26 faster This pair3:39 faster -
Johannesburg I1 Mar 2025Doubles Open · Mixed1:29:03166/372Beat 55%