Pretty simple, it's the game '7 degrees of Kevin Bacon' MMA Style.
As an example:
Sakuraba - Jon Jones
Saku fought Wand-who fought Brian Stann-who fought Chael-who fought Jones.
Anybody wanna play? Remember has to be possible and in 7 ppl or less! 
Aldo-Frankie-BJ-Lyoto-Henderson-Fedor
Got a good one, see if any body gets it:
Fedor-Chandler.
Ice Cold Igors Right Hand - Got a good one, see if any body gets it:Fedor-Michael Chandler.
Fedor-Chandler.
Ice Cold Igors Right Hand - Got a good one, see if any body gets it:
Fedor-Chandler.
Fedor - Hendo - Kondo - Gono - Chandler
Nice one. How about this?
Cormier - Pulver
Iskalainen -Ice Cold Igors Right Hand - Got a good one, see if any body gets it:
Fedor-Chandler.
Fedor - Hendo - Kondo - Gono - Chandler
Nice one. How about this?
Cormier - Pulver
Cormier - Barnett - Couture - Machida - Penn - Pulver
I wonder how many times Travis Fulton's name will pop up. 
Do Royce Gracie - Cain Velasquez
1st UFC champ to the lineal Champion
meloveyoulongtime - Do Royce Gracie - Cain Velasquez
1st UFC champ to the lineal Champion
Easy:
Royce -> Sakuraba -> Cro Cop -> Big Nog -> Cain
TheRealMrBeefy -Mighty Mouse - Brock
Mighty Mouse - Yamamoto - Uno - Penn - Machida - Couture - Lesnar
Thank Fuck for that crazy bastard, BJ Penn, for fighting way out his natural weight class. This game would be a lot harder without him haha.
Rickson - Kimbo
MysteriousNinjaFromMars - Rampage - Koscheck
Rampage - Machida - Penn - GSP - Kos
War Machine-Barnett
WALES1 - Rickson - Kimbo
rickson-takada-crocop-aleksander-thompson-kimbo
WALES1 - Rickson - Kimbo
Rickson - Funaki - Minowa - Yvel - Houston Alexander - Kimbo
Royce - Lesnar
meloveyoulongtime -Iskalainen -Ice Cold Igors Right Hand - Got a good one, see if any body gets it:
Fedor-Chandler.
Fedor - Hendo - Kondo - Gono - Chandler
Nice one. How about this?
Cormier - Pulver
Cormier - Barnett - Couture - Machida - Penn - Pulver
I was actually thinking:
Cormier - Staring - Corassani - Ogle - Grispi - Pulver
Haha, VU.
Chadderz - War Machine-Barnett
War Machine - Yoshiyuki Yoshida - Anthony Johnson - Andrei Arlovski - Brett Rogers - Josh Barnett
This is fun. Keep 'em coming.
Mulletron5000 -I wonder how many times Travis Fulton's name will pop up.
Or Jeremy Horn