A fighter warms up before a bout in Bangkok’s Klong Prem Prison. Thai prisoners, many of them hardened by years of incarceration, were pitted against free foreign fighters in both Muay Thai and traditional boxing bouts. The incorporation of foreigners is a new concept dreamed up by an independent organization called Prison Fight. Prison Fight brands itself as a charity organization and its fights as charity events. Organizers told us they provide prisoners with sport equipment, some cash, and, of course, a serious chance at having their sentences reduced.