Alistair Overeem is, regardless of K-1's current status, the 2010 K-1 World Grand Prix Champion, that means he won what is one of the biggest tournaments in combat sports with a long, rich history. It is still unclear if Overeem will be able to fight for K-1 again, or if K-1 will hold another World Grand Prix, but what is clear is that Overeem is involved in another huge tournament this year and that is the Strikeforce Heavyweight Grand Prix. Overeem faces off against Fabricio Werdum in the Final 8 round this weekend, in a rematch from a few years ago in PRIDE when Overeem was still cutting weight to make Light Heavyweight (PRIDE's Middleweight). Overeem has grown as a fighter since then, with his trainer Martijn de Jong actually saying that Overeem is the most improved fighter that he has ever had the pleasure of working with.
Overeem is already the Strikeforce Heavyweight Champion and looks to take the Strikeforce Heavyweight GP crown as well beginning this weekend. Watch him as he talks to MMAFighting's Ariel Helwani about this weekend's big fight, and while it isn't kickboxing, he has the support of us and the kickboxing community. Also note that Overeem says that he has not signed a new contract with Zuffa yet, so he is still free to fight anywhere until that contract is up. [source]