Suggested by sgtnacho
Fisher gets his primary loadout.
At sun up (roughly 6:30am) The Locust emerge in the stadium and will fight both combatants. They enter the fight in waves as seen in Horde mode.
As of 12:00pm (noon) COG (Gears of War) will Hammer of Dawn the whole stadium and kill everyone involved.
Even after killing their opponents, either fighter needs to survive for 45 minutes so they can be exfiltrated. In this time the Locust can kill them, or the Hammer of Dawn can kill them. If this happens, both fighters lose.
Both combatants have access to an ammo drop in the center of the Thrashball field. It cannot be emptied, destroyed, or moved.