The UFC's roster is an ever-changing list of top fighters, and usually, it's dominated by younger athletes. There are, of course, exceptions, with a number of fighters on the roster over the age of 40 ...

Today, two fighters who know this grind all too well are no longer part of the UFC roster, according to UFC Roster Watch. Their stories speak to the brutal, unforgiving nature of elite MMA.

On the other end of the spectrum is Pichel, who is 11 fights into his UFC tenure, having signed in 2012. The 42-year-old stands as the oldest fighter currently on the UFC roster. And with that ...