Alistair Cees Overeem (born 17 May 1980) is a Dutch former professional mixed martial artist and kickboxer. He is a former Strikeforce Heavyweight Champion, Dream Heavyweight Champion, K-1 World Grand Prix Champion, and was the first fighter to hold world titles in MMA and K-1 kickboxing at the same time. Overeem is also a one-time challenger for the UFC Heavyweight Championship. Overeem holds the UFC all-time record for highest significant strike accuracy in the promotion's history (74.3%).
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