Arizona Diamondbacks Odds

Arizona Diamondbacks 2026 Season Preview

The Arizona Diamondbacks enter the 2026 season looking to reclaim their status as NL West heavyweights after a rollercoaster 2025 campaign. Despite a late-season surge that saw them finish with an 80-82 record, the Diamondbacks narrowly missed the postseason for a second consecutive year, finishing just three games out of a Wild Card spot. The year was defined by a historic "30-30" bounce-back from Corbin Carroll, who silenced health concerns by racking up 31 home runs and 32 stolen bases, as well as a breakout MVP-caliber performance from shortstop Geraldo Perdomo.

However, the 2026 rotation faces immediate adversity as ace Corbin Burnes is set to miss the start of the season following right elbow surgery. To bridge the gap, the Diamondbacks successfully brought back Zac Gallen on a one-year deal and re-signed veteran Merrill Kelly, though the latter is also dealing with an early spring injury. The lineup remains potent with Josh Naylor, who became just the third first baseman in MLB history to record a 20-homer, 30-steal season in 2025, and the blockbuster trade acquisition of eight-time All-Star Nolan Arenado to man the hot corner. With a core featuring Carroll, Arenado, and a rejuvenated Ketel Marte, Arizona has the veteran firepower to push the Dodgers and Padres for the division title if their pitching depth holds steady.

See all of the Diamondbacks MLB odds, as well their win total, championship odds, and much more.

Betting on the Arizona Diamondbacks

Here's what to know when betting on the Arizona Diamondbacks:

Diamondbacks Spread (Run Line)

When betting on baseball, you’ll be faced with three standard options: the moneyline, over/under and run line.

The run line is a bet on the margin of victory, like a point spread. But because baseball is low scoring, the spread will almost always be -1.5 for the favorite and +1.5 for the underdog. The payouts for each will just be adjusted based on each team’s strength.

Here’s a brief example of a run line for a hypothetical Diamondbacks game:

• Chicago White Sox (+1.5)
• Arizona Diamondbacks (-1.5)

As shown above, the Diamondbacks are favored by 1.5 runs against the White Sox; the minus sign (-) indicates Arizona is the favorite, while a plus sign (+) is used to denote the underdog. Bettors who wanted to back Arizona here would be “laying” those 1.5 runs, meaning for their bets to cash the Diamondbacks would need to win by two runs or more. Bettors who selected the White Sox +1.5 would win if Chicago won outright or kept a loss to 1 run.

Diamondbacks Moneylines

Many first time bettors are wary of run line bets, especially when riding with the hometown team. In that case, moneyline wagers are often seen as the safer way to go. A moneyline bet is a bet on who wins the game -- no run line involved.

Let’s use the same example from before to understand the moneyline better:

• Chicago White Sox +150
• Arizona Diamondbacks -180

Just as with run lines, the minus sign (-) signifies a team is favored, while the plus sign (+) means a team is the underdog. The moneyline odds, written in American odds format here, indicate how big or small a favorite that team is, written in increments of $100. For example, to win $100 on the Diamondbacks, a bettor would need to risk $180. On the flip side, a $100 bet on the White Sox would net $150 if they pulled the upset.

Odds can differ from sportsbook to sportsbook, so always make sure you shop for the best line with The Action Network app.

Diamondbacks Over/Unders

Betting on a team to win or cover a run line isn’t the only type of wager allowed on MLB games. Almost all sportsbooks will offer a total on the game, also known as an over/under. This bet is not on the winner of the contest, but on the number of runs the two teams will combine to score; sportsbooks hang a number, and bettors can wager either over or under that total.

If the number for our hypothetical Diamondbacks-White Sox matchup was 8 runs, over bettors would require 9 points or more to cash their tickets, while those who bet the under would need 7 or fewer runs. If the two teams scored exactly 8 runs between them, that bet would push and all wagers would be refunded.

Diamondbacks Props

Some bettors find more entertainment and success betting on more specific outcomes than the result of the game. Prop bets cover a wide market of wagers on player stats, discrete in-game events, and any style of yes/no question. Many props are bets on specific players and their performance, such as betting Ketel Marte over 1.5 hits on a given night, or betting that Corbin Burnes will strike out over 9.5 batters. Some props can be shorter term, such as betting on the number of runs scored in the first five innings or who will hit a home run. Offerings tend to vary depending on the sportsbook, so use our sportsbook reviews to find the best bet for you.

Diamondbacks Futures

Bettors should shop for the best line to get good odds on Diamondbacks MLB futures bets. Futures are bets that focus on long term outcomes, like the Diamondbacks to win the NL West, win the National League Pennant, win the World Series, or even individual awards like winning league MVP.

Where to Bet on the Arizona Diamondbacks

Sports betting is legal and live in the state of Arizona. Bettors have the option to bet in person or online for their favorite teams like Arizona. Take a look at our Arizona sports betting page to learn more about sports betting in the state and opportunities to wager on Arizona.

The Action Network has partnerships with several sportsbooks that give you exclusive access to great promotions if you are located within the state. However, plenty of bettors outside of Arizona also wager on the Diamondbacks.

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