Question: Robert "Bob" Schrijber, is a Dutch former mixed martial artist and kickboxer, his most famous student at the moment is which UFC fighter, a Dutch mixed martial artist who competes as a heavyweight in the UFC?
Sentence (from "Kim Min-soo (judoka)"): He is also known for his fights with current WWE professional wrestler and former UFC Heavyweight Champion and veteran Brock Lesnar, former WWE wrestler and K-1 fighter Sean O'Haire and former NFL football player turned K-1 kickboxer and New Japan Pro Wrestling contender Bob Sapp.
Relevant evidence: No