NFL

One feed does all of it. API-Sports' American Football endpoint carries the whole calendar — the Hall of Fame game, all three preseason weeks, the regular season and the play-offs — and states each game's stage, week, quarter scores and live clock outright. The same feed carries prices from five bookmakers: Bet365, Pinnacle, Marathon, BetVictor and 1xBet, quoting the moneyline (Home/Away), the handicap (Asian Handicap) and the game total (Over/Under). We average those in implied-probability space and strip the bookmaker margin out, so what you see sums to exactly 100% rather than the 104-108% a book actually prices. The bookmaker count on each game tells you how many were behind that number. One honest limitation, measured rather than assumed: books only start quoting a game about a day or two before kickoff. Five were quoting a game eleven hours out and none were quoting the games three days out. A game nobody is quoting yet still appears, carrying our own power rating instead — marked with a ~ as an estimate, and never mixed into the market number, because a rating built from scorelines and a price built from money are different kinds of claim. Play-off fixtures stay off the board until the teams are known.