If anything, Melvin Manhoef has proven to be a good sport through most of his career. Look for no more proof than the video sent out by It's Showtime today taken just moments after Manhoef signed a new contract with K-1 at the It's Showtime office (his management) in the Netherlands. Melvin chose to take his Land Rover over a patch of grass, not noticing a concrete slab which he then proceeded to hit, scratching his car. They caught it on video and posted it online while Melvin jokes about it.
The important part to take note of here is that Manhoef has signed a contract to compete in K-1, which is no real surprise to anyone, but nice to know.