Cohort progression — LUKS Winner Zdzieszowice
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 breaststroke50 breaststroke50 butterfly100 backstroke100 medley200 freestyle200 medley100 butterfly200 breaststroke400 freestyle200 backstroke
Cohorts to compare: 2012 32011 32009 62008 42007 122006 182005 212004 152003 222002 132001 42000 51999 4
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2011 born 2009 born 2008