Dr. Strange vs. Bleeding-edge Ironman vs. Ragnarok Thor
Fight takes place in Grandmaster's arena. Dr. Strange as he was on Titan but without time gem. Ironman with his nanosuit armor (bleeding-edge armor). Thor as he was at the end of Ragnarok - no weapons for Thor.
3-way fight, fighter is eliminated when he dies. No BFR's - fighter needs to be seen dead in the arena to be eliminated. Fighters have basic knowledge of each other but don't know the full extent of each other's powers.