Resolves at end of regular season.

The "Championship Belt" concept comes from boxing/wresting and is the idea that every season, the previous years champion (here the Super Bowl) starts with the belt, and each time they lose they pass the belt to the winning team who becomes the new sole owner. The concept is explained here: https://grantland.com/the-triangle/introducing-the-nba-regular-season-championship-belt/ So far this season, the Chiefs have lost this "belt" to the Lions in Week 1 (no, the preseason did not count), who then lost the "belt" to the Seahawks in Week 2. The Seahawks successfully defended their belt against the Panthers Week 3, and thus the Seahawks start this market "holding the belt" (but will pass it on after their first loss, if they lose). Week 0: Chiefs Week 1: Lions Week 2: Seahawks Week 3: Seahawks This market closes at the conclusion of the regular season, resolving simply with the team who holds the belt after Week 18. I'll update each week with the current owner of the belt.

50% chance. Right now Miami is averaging the highest EPA/Play per game and highest Offensive DVOA of all time through 3 weeks. Will they end the season with a historically top offense? Finishing top 5 (of team offenses all time) compared either of these two metrics would resolve to "Yes". Expected Points Added/Play https://rbsdm.com/stats/stats/ (Can replace with a better source, or one that goes back further) Offensive DVOA https://www.ftnfantasy.com/nfl/tools/offense-team-dvoa [link preview]I would also entertain editing to add other proposed metrics that measure offensive efficiency (but will not add a new metric after NFL Week 12 for market integrity) that aren't redundant if suggested.