Alistair Overeem (born 17 May 1980) is a Dutch mixed martial arts (MMA) fighter and former high level kickboxer. He is also the former Strikeforce Heavyweight Champion, DREAM Interim Heavyweight Champion, K-1 World Grand Prix Champion, and is one of only two fighters to hold world titles in both MMA and K-1 kickboxing simultaneously. As of July 2017, he is #1 ranked fighter in the official UFC heavyweight rankings.
“I started training at the age of 17 and fought my first serious fight at 19 years old. My brother took me to the gym to defend myself and I was a youngster with a lot of energy. My brother showed me that I could use the energy in sport and he was right. After a while, I enjoyed working out and eventually fighting for a living.” Alistair Overeem said when asked about the beginning of his career.