Team 1 is Moon Knight, Punisher, and Shang-Chi. All three are their pre-Shadowland incarnations.
Team 2 is Nightwing (Richard Grayson), Red Hood (Jason Todd, Pre New 52), and Black Canary (c. Gail's 2nd BoP run)
Setting is the Roman Gladiator arena. All combatants are in-character with the exception that Jason and Frank have been "persuaded" by their companions to refrain from using lethal force for the time being. Victory is when all opponents on the other side are down for the count.
Round 1: Strictly Hand-to-hand
Round 2: Everyone's got standard gear with the exception of Frank, whose arsenal for this fight will be what he used to pack before getting so many hi-tech toys.