Progress against the field
James Grufferty and Roselyn Grufferty have gained 0:21 on the field from Glasgow 2025 to Birmingham 2026.
The clock says 3:45 faster, but the races themselves got 3:24 quicker for everyone.
The largest gain on the field came from Birmingham 2025 → Dublin 2025: 2:26 in 21 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 · 4 events
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Birmingham31 Oct 2026Doubles Open · Mixed1:16:43 PB181/560Beat 68%
↑ 353 days after Dublin 2025, with Roselyn Grufferty 0:01 better than the field Why ↓Close ↑
0:30 faster on the clock, and the race was 0:29 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →0:29 faster This pair0:30 faster -
Dublin12 Nov 2025Doubles Open · Mixed1:17:13222/559Beat 60%
↑ 21 days after Birmingham 2025, with Roselyn Grufferty 2:26 better than the field Why ↓Close ↑
2:26 better than the field: 3:55 faster on the clock, against 1:29 faster for everyone.
The fieldCompare these two →1:29 faster This pair3:55 faster -
Birmingham22 Oct 2025Doubles Open · Mixed1:21:08461/889Beat 48%
↑ 224 days after Glasgow 2025, with Roselyn Grufferty 2:06 worse than the field Why ↓Close ↑
2:06 behind the field: 0:40 slower on the clock, against 1:26 faster for everyone.
The fieldCompare these two →1:26 faster This pair0:40 slower -
Glasgow12 Mar 2025Doubles Open · Mixed1:20:28425/861Beat 51%