Cardinals vs. Raiders Preseason Prediction: Fernando Mendoza and Carson Beck Headline NFL Preseason Week 1 Opener at Allegiant Stadium

Preseason football rarely settles anything, but Thursday night at Allegiant Stadium comes with a genuine subplot worth watching: two rookie quarterbacks who squared off in last season’s College Football Playoff title game will share the same field again, this time in Raiders black and Cardinals red.

Quick take:

• Pick: Raiders -1.5
• Why: Home team is playing more of its starters for longer, including Kirk Cousins, while Arizona leans heavier on backups after already logging a Hall of Fame Game
• The number to watch: Fernando Mendoza’s snap count as the No. 1 overall pick gets extended run behind the Raiders’ first-team offensive line

Both teams arrive with real intrigue but very different amounts of preseason mileage already logged. Arizona already played a full exhibition in the Hall of Fame Game against Carolina on August 6, where third-round rookie Carson Beck went 15-of-19 for 188 yards and a touchdown in relief work. The Raiders, by contrast, are opening their preseason slate fresh at home, and head coach Klint Kubiak has confirmed his starters will see the field to kick off his first game as an NFL head coach.

Arizona head coach Mike LaFleur has said his team will also play its starters, which means Jacoby Brissett should get at least a series or two under center for the Cardinals before the quarterback competition shifts toward Beck and whoever else gets run behind him. It sets up an interesting contrast in approach for a game that, on paper, means nothing in the standings but plenty for roster construction.

Why the Preseason Line Still Tells a Story

Sportsbooks have the Raiders favored by a spread that has moved between -2.5 and -0.5 throughout the week, with Arizona correspondingly priced between +0.5 and +2.5. On the moneyline, Las Vegas sits in the -130 to -135 range against Arizona’s +110 to +114, and the total has settled in a 39.5 to 42 window. Preseason numbers like these are inherently soft — with backups and rotating personnel groups on the field for most of four quarters, oddsmakers are pricing coaching tendencies and roster health as much as actual matchup strength.

That’s worth remembering before leaning too hard on any preseason spread. The market here is really reacting to depth chart logistics: how long will Cousins and the Raiders’ top offensive line stay in, and how much does Arizona’s LaFleur trust his backups to move the ball once Brissett and the starters exit. Home-field advantage matters less in August than during the regular season, but a fresher, less-traveled Raiders roster playing its first live snaps of the summer is a small factor tilting the number toward Las Vegas. For bettors looking to shop lines before kickoff, checking a DraftKings promo code is worth doing given how much preseason numbers can shift by game time.

The Quarterback Rematch and the Roster Battles Worth Tracking

The headline storyline is obvious: Fernando Mendoza, the No. 1 overall pick out of Indiana, gets his first real look behind the Raiders’ offensive line after a training camp that included plenty of first-team reps and, notably, a physical scuffle with Maxx Crosby that turned heads around the building. Kubiak has been coy about exact snap counts but promised Mendoza will “get plenty of reps,” setting up a look at whether the rookie can push Kirk Cousins for anything beyond a strict backup role as the season approaches.

On the other side, Carson Beck already has a preseason data point in the bank. His Hall of Fame Game showing — 15-of-19 passing, 188 yards, a touchdown, and a 125.4 QB rating in extended second-half work — gave Cardinals fans a reason to be excited about QB depth beyond Brissett. A second strong outing against a Raiders defense anchored by Crosby would only add fuel to that fire.

Beck completed 78.9 percent of his throws in his preseason debut against Carolina.

Beyond the quarterbacks, this game doubles as an audition for a wave of rookies on both sides. Arizona’s Jeremiyah Love, the No. 3 overall pick out of Notre Dame, didn’t play in the Hall of Fame Game as Bam Knight and Corey Kiner soaked up the carries, so Thursday could be the rookie running back’s first true look behind a Cardinals offensive line, even with James Conner and Tyler Allgeier still expected to anchor the backfield rotation into the regular season. For the Raiders, cornerbacks Zeke Massa and Jermod McCoy, safety Treydan Stukes, offensive lineman Trey Zuhn, and running back Mike Washington are all part of a rookie class trying to carve out real roles on a defense and offensive line still very much taking shape under new leadership.

Second-year wide receiver Jack Bech is another name worth tracking. After a quiet rookie season, Bech enters his second preseason looking to build real chemistry with the Raiders’ new quarterback room and show he can be a consistent target regardless of who’s throwing him the ball. Bettors tracking roster battles like these throughout August can also use the expected value calculator to gauge whether a preseason number actually offers real edge.

Prediction and Best Bet

With Kubiak using this as his head-coaching debut and committing to extended snaps for his top offense, expect the Raiders to control most of the first half before both benches empty out. Arizona’s Beck-led group should still move the ball capably in the second half given how well he played in the Hall of Fame Game, but Las Vegas’ fresher legs and home crowd should be enough to tip a low-scoring, sloppy August game in the Raiders’ favor.

Sun, Sep 13 • 4:25 PM	Spread	Money	Total
Miami Dolphins	+3.5 (-118)	+164	O 40.5 (-109)
Las Vegas Raiders	-3.5 (-110)	-176	U 39.5 (-102)

The pick:

1. Prediction: Raiders 20, Cardinals 16
2. Best Bet: Raiders on the moneyline

It’s preseason, so treat every possession as an audition rather than a referendum — but if you’re looking for an edge on a thin August board, lean toward the team with the plan already in place.