i just watched about 10 of overheems fights,
he appeared to up the dose in 2009,
and slowed a bit because of it, he just rushes in like a tank. and when he hits his opponent it seems to cause major damage.
he got tko by badr fella for being a bit slow.
but i like his style, and that he fights all comers, k1- or mma rules.
got to respect that he is exciting to watch, more so than watching 140lbs dudes in ufc laying on top of each other for 3 rounds.
k1 is much more entertaining to watch for me, as i found by watching his fights.