1. Dan "Hendo" Henderson. Once a great fighter with huge KO power. But has overstayed in the fight game and has been TKO'ed his last few fights. Hendo needs to hang it up before his brains get more scrambled than they already are. He has took massive amounts of head-damage the last few years.
2. Ruan Potts. If you didn't see all his UFC fights or just last weekend. Guy is the ultimate-Can
3. Josh Koscheck. This is a hard one for me to say since I've been a fan of Kos since TUF 1. At one time Kos had the best wrestling/double-leg take-down in the WW division. Hasn't been the same since GSP wrecked his orbital facial-bone. Guy hasn't been himself since. The Ellenburger fight it didn't even look like the Kos I been watching 10 years. He still has 1 or 2 fights left on his UFC contract. I wouldn't be mad if he decided to hang it up today. Hopefully he will fight a can his next fight so he can go out with a W.
Who are your top 3 fighters who need to hang it up?