Ahead of Week 4 in the NFL, let's take a look at BetMGM Sportsbook and the offers available to fans of sports betting in Arizona. BetMGM is one of the best online sportsbooks for sports bettors in the Grand Canyon State.

BetMGM is offering a welcome bonus of up to $1,000 for its new sports betting customers. Simply sign up for BetMGM, use the promo code BOOKIES, make your first deposit with the sportsbook, and if it’s a loser, you’ll be credited with a free bet of up to $1,000.

The great thing about BetMGM’s promo is that the free bet has no rollover requirements attached to it, meaning that you can cash out your winnings immediately if your free bet is a winner.

RELATED: NFL Week 4 Odds & Betting Lines For All 16 Games

In addition, BetMGM is also offering the chance to get single-game NFL parlay insurance. If you make a one-game parlay of at least $25 and one of four parlay legs loses, BetMGM will give you back up to $25 in insurance so you can take another shot.

The same deal is available for those who want to bet on college football in addition to NFL betting. All of these promos add up to make BetMGM one of the top sports betting apps available in the United States.

RELATED: NFL Week 4 Picks & Best Bets For Every Game

Cardinals Travel to L.A To Take On Rams

At 3-0 so far this season, the Arizona Cardinals are one of the hottest NFL teams in the league. The same can be said about the L.A. Rams, who are also 3-0. Given that the Rams are the home team for this Week 4 contest, the oddsmakers opened up the Rams as a -4.5 point betting favorite to win their fourth game in a row during this young NFL betting season.

Cardinals QB Kyler Murray has played great so far and he is considered by many to be a leading front-runner for NFL MVP. The third-year QB already has seven touchdowns this year.

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Rams QB Matthew Stafford has also played well since joining the Rams following an offseason trade, as the former Detroit Lions QB has been incredible for the L.A franchise. He’s already thrown for nine touchdowns against just one pick.

Stafford has been one of the best QBs in the league for many years and is finally getting more attention in a bigger media market.

In what is expected to be a high-scoring game between two prolific NFL offenses, the O/U NFL line total has been set at 55 points for this contest.