Cohort progression — MKS Wodnik Radom
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 butterfly50 breaststroke100 breaststroke50 backstroke100 medley100 butterfly100 backstroke200 medley200 breaststroke200 freestyle400 medley200 backstroke200 butterfly400 freestyle25 freestyle25 backstroke
Cohorts to compare: 2014 52012 82011 92010 142009 122008 162007 162006 342005 72004 202003 522002 32001 102000 61999 61998 151997 71996 81995 7
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2011 born 2010