For many sports fans, life is just not fair.
They stay dedicated to their teams, but they have no control over what players, management or even ownership decides to do with their beloved franchise.
Sometimes it is the foolishness of an individual that throws off something they were connected to.
Whatever the case, fans deal with betrayal all the time.
Interestingly enough, most of the biggest betrayals have been more recent. Of course, things such as endorsements have become much bigger deals as of late, making major markets much more desirable.
These betrayals are some that have and will continue to sting fans for many years to come.
Note: I wrote a similar article in January, The 30 Most Unforgivable Betrayals in Sports. This is an update on that list, with new additions and moves.