candidate: Masters ' Diving events are normally conducted in age - groups of 5 or 10 years , and attract competitors of a wide range of ages and experience ( many , indeed , are newcomers to the sport ) ; the oldest competitor in a Masters ' Diving Championship was Viola Krahn , who at the age of 101 was the first person in any sport , male or female , anywhere in the world , to compete in an age - group of 100 + years in a nationally organized competition .