I always have gladiatorial arenas in my games. I'm sure I could use this with a little tweaking. Downloading now...
Check out this new article Wizards of the Coast posted recently:
Dungeon Side Trek: Caravan of Glauu the Seer
This caravan boasts one of the region's best stables of ushemoi gladiators. Okay, maybe it's the only such stable, but the leader of this caravan is still ready to take all comers.