Mariners vs Cubs Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 23

Odds updated as of 2:12 a.m.

Sunday's slate in the MLB includes a matchup between the Seattle Mariners and the Chicago Cubs.

Before you do any MLB betting on this game at FanDuel Sportsbook, here's what you need to know.

Mariners vs Cubs Game Info

• Seattle Mariners (62-68) vs. Chicago Cubs (74-56)
• Date: Sunday, August 23, 2026
• Time: 4:10 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: Mariners.TV and MARQ

Mariners vs Cubs Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-108) | CHC: (-108)
• Spread: SEA: +1.5 (-176) | CHC: -1.5 (+146)
• Total: 7.5 -- Over: (-112) | Under: (-108)

Mariners vs Cubs Probable Starting Pitchers

Probable Pitchers: Bryce Miller (Mariners) - 4-7, 3.71 ERA vs Shota Imanaga (Cubs) - 8-9, 3.77 ERA

The Mariners will call on Bryce Miller (4-7) against the Cubs and Shota Imanaga (8-9). Miller and his team are 1-13-0 ATS this season when he starts. When Miller starts a game and his team is the favorite on the moneyline, they have a record of 3-9. When Imanaga starts, the Cubs are 10-14-0 against the spread. The Cubs have been the moneyline underdog in three of Imanaga's starts this season, and they went 2-1 in those games.

Mariners vs Cubs Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Cubs win (53.5%)

Mariners vs Cubs Moneyline

• Looking at the moneyline for Cubs-Mariners, Chicago is the underdog at -108, and Seattle is -108 playing at home.

Mariners vs Cubs Spread

Mariners vs Cubs Over/Under

• The over/under for the Mariners versus Cubs contest on Aug. 23 has been set at 7.5, with -112 odds on the over and -108 odds on the under.

Bet on Seattle Mariners vs. Chicago Cubs on FanDuel today!

Mariners vs Cubs Betting Trends

• The Mariners have won in 51, or 50.5%, of the 101 contests they have been named as odds-on favorites in this year.
• This season Seattle has been victorious 52 times in 102 chances when named as a favorite of at least -108 on the moneyline.
• The Mariners and their opponents have hit the over in 65 of their 129 games with a total set by oddsmakers this season.
• The Mariners are 47-82-0 against the spread in their 129 games that had a posted line this season.
• The Cubs are 21-18 in games they were listed as the moneyline underdog (winning 53.8% of those games).
• When playing as a moneyline underdog with odds of -108 or longer, Chicago has a record of 21-18 (53.8%).
• The Cubs have played in 125 games with an over/under set, and have combined with opponents to go over the total 68 times (68-57-0).
• The Cubs have covered 48.8% of their games this season, going 61-64-0 against the spread.

Mariners Player Leaders

• Randy Arozarena leads Seattle in OBP (.369), slugging percentage (.463) and total hits (125) this season. He has a .275 batting average.
• Among all qualified hitters in MLB, he is 35th in batting average, 18th in on-base percentage, and 40th in slugging.
• Arozarena will look for his third straight game with a hit in this contest. In his last five games he is hitting .250 with two home runs, two walks and four RBIs.
• Josh Naylor has hit 10 homers this season while driving in 46 runs. He's batting .265 this season and slugging .367 with an on-base percentage of .328.
• Among qualifying batters, he is 50th in batting average, 75th in on-base percentage and 119th in slugging percentage.
• Cole Young has 120 hits this season and has a slash line of .253/.313/.392.
• Julio Rodriguez is batting .250 with a .313 OBP and 53 RBI for Seattle this season.

Cubs Player Leaders

• Pete Crow-Armstrong has accumulated an on-base percentage of .377, a slugging percentage of .554, and has 138 hits, all club-highs for the Cubs (while batting .279).
• Including all the qualifying hitters in MLB, his batting average places him 26th, his on-base percentage is 11th, and he is second in slugging.
• Alex Bregman has 24 doubles, a triple, 19 home runs and 63 walks while batting .258. He's slugging .423 with an on-base percentage of .347.
• Including all qualified players, he ranks 68th in batting average, 50th in on-base percentage and 70th in slugging percentage.
• Nico Hoerner is hitting .263 with 27 doubles, a triple, seven home runs and 40 walks.
• Seiya Suzuki is hitting .267 with 24 doubles, 22 home runs and 58 walks.

Mariners vs Cubs Head to Head

• 8/22/2026: 5-4 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -114, Underdog Moneyline: +106)
• 8/21/2026: 6-5 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -108, Underdog Moneyline: +100)
• 6/22/2025: 14-6 SEA (Favorite: Mariners, Spread: -1.5, Total: 11.5, Favorite Moneyline: -130, Underdog Moneyline: +110)
• 6/21/2025: 10-7 CHC (Favorite: Cubs, Spread: -1.5, Total: 12.5, Favorite Moneyline: -166, Underdog Moneyline: +140)
• 6/20/2025: 9-4 SEA (Favorite: Cubs, Spread: -1.5, Total: 9.5, Favorite Moneyline: -144, Underdog Moneyline: +122)
• 4/14/2024: 3-2 CHC (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 4/13/2024: 4-1 CHC (Favorite: Cubs, Spread: -1.5, Total: 7.5, Favorite Moneyline: -136, Underdog Moneyline: +116)
• 4/12/2024: 4-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -134, Underdog Moneyline: +114)
• 4/12/2023: 5-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 11, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 4/11/2023: 14-9 CHC (Favorite: Cubs, Spread: -1.5, Total: 10.5, Favorite Moneyline: -120, Underdog Moneyline: +102)

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