What the Odds Say
The Los Angeles Chargers open as massive home favorites against the Arizona Cardinals in this Week 1 NFL matchup on Sunday, September 13, 2026. The moneyline implies a Chargers win probability of 84 to 86 percent depending on the book, making this one of the more lopsided games on the early NFL slate.
FanDuel and BetMGM list the Chargers at -588, which converts to roughly 85.5 percent implied probability. The Cardinals are available as high as +450 at those same books, meaning a $100 bet on Arizona returns $450 in an upset. BetRivers offers the most favorable number for Chargers moneyline bettors at -526, with the Cardinals at +375 on that side. If you want to convert any of these numbers quickly, the Odds Converter on Line Whale handles that in seconds.
Moneyline Shopping for Arizona Cardinals and Los Angeles Chargers Bettors
For Cardinals backers willing to take a shot on the upset, the difference between books is meaningful. Arizona ranges from +375 at BetRivers to +450 at BetMGM and FanDuel. A $100 bet at +375 returns $375. The same bet at +450 returns $450. Getting the best number on a longshot matters.
For Chargers bettors, the moneyline price is steep across the board. MyBookie has them at -625, the most expensive option available. BetRivers and Novig both sit at -526, notably cheaper than the cluster of books at -588. Shopping for the best price on the favorite side is just as important as it is on the underdog side.
Spread Breakdown: 9.5 to 10.5 Points
Most books have settled at Los Angeles -10.5, but BetRivers and Novig are both offering the Chargers at -9.5. BetUS and Bovada split the difference at -10.
For Cardinals bettors, the difference between +10.5 and +9.5 is a full point of cushion that could be decisive if the final margin lands on a key number. The best Cardinals spread number is +10.5, available at BetMGM, DraftKings, MyBookie, and others at standard -110 juice. Chargers bettors looking to lay fewer points should check BetRivers or Novig at -9.5, though Novig's number carries -122 juice on that side.
One outlier worth flagging: Kalshi is showing Arizona +9.5 at -169. That is a heavily juiced version of a smaller number and not a line worth chasing.
Totals: Clustered Around 46 to 46.5
The over/under market shows tight consensus. BetOnline, BetUS, and LowVig are all at 46, while most major books sit at 46.5. Kalshi is an outlier at 47.5. Polymarket's total of 50.5 reflects a different pricing methodology and should be treated as a market anomaly rather than a signal.
The half-point difference between 46 and 46.5 is worth targeting. Over bettors should grab it at 46 from BetOnline, BetUS, or LowVig for extra cushion. Under bettors can find 46.5 at standard juice from multiple major books.
Factors That Could Move the Line
Injury news is the most likely catalyst for movement, particularly anything involving the quarterbacks or key offensive pieces on either side. A spread of 10.5 is also sensitive to public money. Continued Chargers action could push some books toward -11, while sharp Cardinals money could pull it back toward -10 or lower.
Weather is not a factor given the Chargers play in a climate-controlled stadium. Roster moves, depth chart changes, and Week 1 availability questions could all create movement in the days ahead. Tracking live odds comparisons across books is the best way to catch significant line shifts as they happen.
With roughly four weeks until kickoff, the market has time to develop. The core story is a heavy Chargers favorite at home against a Cardinals squad priced as a significant underdog. Where the line settles closer to game day will tell us how the market reads both teams heading into the 2026 season.