The Armored Combat League takes Superbowl tacticians to the Renaissance arena with its 5-on-5 all-in medieval combat tournaments.
"A full-contact steel-weapons last-man-standing battle," so says all-American ACL co-founder Andre Sinou in the following video.
Personally, I'd like to see more than 5 on 5, like 11 on 11 would sport-ise it more, and get those shields interlinked: show me your strongest defensive line - Romans vs Celts - Vikings vs Huns - Persians vs Spartans etc... A chariot maybe? An oliphant? We all saw Ridley Scott's GLADIATOR, right? There's the blue-print already.
So, you know you're in a Global Roman Republic when Colosseum mentality looks this much fun.