Strikeforce heavyweight champion Alistair Overeem became the 2010 K-1 World Grand Prix champion Saturday in Tokyo, Japan, by defeating Tyrone Spong, Gokhan Saki and Peter Aerts all in one night. Here are videos of the historic bouts, making Overeem the first fighter to ever hold a major MMA and K-1 title simultaneously.

Quarterfinals: Overeem vs. Tyrone Spong

Semifinals: Overeem vs. Gokhan Saki

Finals: Overeem vs. Peter Aerts

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