Athlete		Records by age
Name	Born	Made in career	Still unbeaten	%	Records' list
Johnny Gray	USA, 1960	11	4	36,36	24 28 30 31 32 34 35 36 37 38 39
Wilson Kipketer	Den, 1970	5	5	100	26 27 29 32 33
Michael Boit	Ken, 1949	5	0	0	25 26 27 29 32
David Rudisha	Ken, 1988	4	4	100	22 23 24 28
John Kipkurgat	Ken, 1944	4	0	0	29 30 31 32

KEY
26	Beaten record
32	Unbeaten record