Reward: Some gold + a trophy.
You will find 'fight clubs' in Bowerstone Quay, Oakvale, Twinblade Elites and Gnothole Glade. Men gather in these places, indicated by white circles on the ground, during the night and have some hand-to-hand combat. You can participate in the competition. Fighting in here is different from what you're used to and requires some skill and reflexes. Blocking is absolutely essential. High Speed stat will help you a lot in here. You will get some gold for winning each of the events and if you become a champion of them all you'll get a special trophy.