It's often overlooked that competitors in sport and prize fighting have a limited span of time in which they are competitive. This can be important, because, for people who do it professionally, they only have a certain number of peak earning years.
I'm looking for an answer that covers a wide range of combat sports, including Olympic sports and prize-fighting.
- What is the average career span for an elite fighter?
Answers that include discussion of outliers with longer than usual careers is also welcome, both those who decline and those who maintain dominance. Breakdowns for various combat sports are also welcome.