Brock Lesnar signed with a martial arts promotion.
He then signed with the Ultimate Fighting Championship -LRB- UFC -RRB- the following October.
The Ultimate Fighting Championship -LRB- UFC -RRB- is an American mixed martial arts-focused company , based in Las Vegas , Nevada , owned and operated by parent company William Morris Endeavor.
It is the largest MMA promotion in the world and features the top-ranked fighters of the sport.
