They continue to spend after their income is reduced or stopped.
It is said that within six years of the end of their career most professional athletes will be where they would have been without sports. Meaning that those that have the skills and intelligence to be successful in a business career will be fine and those who only know how to play a sport will be broke.
because the regular income goes and they keep living the life that comes with being rich and eventually lose it all. Also typical athetes aren't very intelligent so don't know how to spend money well
Because they're used to being overpaid for doing nothing and when they retire they blow their money without an income to fall back on.
They don't, learn how to spell.