The Cage is a short story by Nick Kyme, published in Tome of Fire (Anthology) and Salamanders: The Omnibus, and online in April 2014.
Deep in the festering underhive of Molior the arena of Seven Points plays host to a bloody gladiatorial contest staged by its gang lords. Amongst the fighters, a mysterious warrior, Scar-borne stands out. The arena is his chance to atone for a previous misdeed, his crimes paid for in blood. But when Seven Points comes under attack from a rival gang, Scar-borne must decide what he values more - his freedom or his penitence.