If you do make sure you don't allow Gerbils to enter the fighting. They'll kick the shit out of any hamster. I found that out the hard way when I was 8.
that would be awesome!!! i say you have the cage of death and have it made of barbwire or make them fight in the spinning wheel just to make it interesting!
i'm getting my mouse ready to beat your hampsters ass.. i call him ronnie! he's takin GH now but won't listen to me on the doses, he actually won't work out with me anymore because i "hold him back" i swear he's a real ass here's his pix though