Cohort progression — UKS SP Aquarius Lesko
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 50 freestyle100 freestyle50 backstroke100 backstroke50 butterfly200 freestyle50 breaststroke100 medley100 butterfly400 freestyle100 breaststroke200 backstroke200 medley200 breaststroke25 backstroke25 freestyle1500 freestyle
Cohorts to compare: 2019 62018 132017 182016 222015 172014 162013 302012 162011 102010 142009 102008 42007 122006 62004 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2017 born 2016