Gallery Jairzinho Rozenstruik def. Alistair Overeem at UFC on ESPN 7: Best photos view 14 images Jairzinho Rozenstruik earned his first UFC main event win on Saturday when he defeated Alistair Overeem at UFC on ESPN 7. Rozenstruik (10-0 MMA, 4-0 UFC) kept his undefeated record in tact with a fifth-round knockout victory against Overeem (45-18 MMA, 10-7 UFC) in the heavyweight headliner, which took place at Capital One Arena in Washington, and aired on ESPN.
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