Mariners vs Orioles Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 13

Odds updated as of 4:20 p.m.

The MLB's Wednesday schedule includes the Seattle Mariners facing the Baltimore Orioles.

Before checking out the MLB betting lines on FanDuel Sportsbook, we've got you covered, in terms of the vital information about this game.

Mariners vs Orioles Game Info

• Seattle Mariners (67-53) vs. Baltimore Orioles (53-66)
• Date: Wednesday, August 13, 2025
• Time: 6:35 p.m. ET
• Venue: Oriole Park at Camden Yards -- Baltimore, Maryland
• Coverage: MASN and ROOT Sports NW

Mariners vs Orioles Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-148) | BAL: (+126)
• Spread: SEA: -1.5 (+116) | BAL: +1.5 (-140)
• Total: 8.5 -- Over: (+102) | Under: (-124)

Mariners vs Orioles Probable Starting Pitchers

Probable Pitchers: Logan Gilbert (Mariners) - 3-4, 3.35 ERA vs Trevor Rogers (Orioles) - 5-2, 1.44 ERA

The Mariners will give the nod to Logan Gilbert (3-4) versus the Orioles and Trevor Rogers (5-2). Gilbert and his team are 5-11-0 ATS this season when he starts. Gilbert's team is 10-4 this season when he starts and they are the moneyline favorite. The Orioles are 8-2-0 against the spread when Rogers starts. The Orioles are 4-2 in Rogers' six starts this season that they were the moneyline underdog.

Mariners vs Orioles Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (58.1%)

Mariners vs Orioles Moneyline

• Seattle is the favorite, -148 on the moneyline, while Baltimore is a +126 underdog despite being at home.

Mariners vs Orioles Spread

• The Mariners are favored by 1.5 runs on the road against the Orioles. The Mariners are +116 to cover the spread, while the Orioles are -140.

Mariners vs Orioles Over/Under

• A total of 8.5 runs has been set for the Mariners-Orioles contest on Aug. 13, with the over available at +102 and the under at -124.

Bet on Seattle Mariners vs. Baltimore Orioles on FanDuel today!

Mariners vs Orioles Betting Trends

• The Mariners have been victorious in 47, or 58%, of the 81 contests they have been chosen as favorites in this season.
• This season Seattle has been victorious 19 times in 32 chances when named as a favorite of at least -148 on the moneyline.
• The Mariners' games have gone over the total in 61 of their 117 opportunities.
• The Mariners are 51-66-0 against the spread in their 117 games with a line set by sportsbooks this season.
• The Orioles have been the moneyline underdog 61 total times this season. They've gone 27-34 in those games.
• When it has played as a moneyline underdog with odds of +126 or longer, Baltimore has a record of 5-14 (26.3%).
• The Orioles have played in 117 games with an over/under set, and have combined with opponents to go over the total 50 times (50-63-4).
• The Orioles are 52-65-0 ATS this season.

Mariners Player Leaders

• Cal Raleigh leads Seattle with 108 hits, batting .245 this season with 61 extra-base hits. He has an on-base percentage of .351 and a slugging percentage of .587.
• He ranks 109th in batting average, 42nd in on-base percentage, and third in slugging among all qualifying hitters in MLB.
• Josh Naylor has 118 hits this season and a team-best OBP of .359. He's batting .291 and slugging .462.
• He is 14th in batting average, 28th in on-base percentage and 49th in slugging in the major leagues.
• Naylor heads into this matchup looking to extend his three-game hit streak. In his last five games he is batting .400 with two doubles, two home runs, a walk and four RBIs.
• Julio Rodriguez has an OPS of .759, fueled by an OBP of .312 and a team-best slugging percentage of .447 this season.
• Rodriguez has picked up a hit in three games in a row. During his last five outings he is hitting .300 with two home runs, a walk and three RBIs.
• Eugenio Suarez has 37 home runs, 92 RBI and a batting average of .234 this season.

Orioles Player Leaders

• Gunnar Henderson has accumulated 119 hits with a .354 on-base percentage and a .468 slugging percentage, all club-bests for the Orioles. He's batting .284.
• Including all qualified hitters in MLB, he ranks 23rd in batting average, 36th in on-base percentage and 42nd in slugging percentage.
• Henderson brings a five-game hitting streak into this matchup. During his last five outings he is hitting .313 with two doubles, a home run, two walks and three RBIs.
• Jackson Holliday is hitting .251 with 15 doubles, two triples, 14 home runs and 28 walks. He's slugging .390 with an on-base percentage of .302.
• Including all qualified hitters, he ranks 93rd in batting average, 129th in on-base percentage and 122nd in slugging percentage.
• Adley Rutschman is batting .235 with 16 doubles, a triple, nine home runs and 37 walks.
• Jordan Westburg is hitting .262 with nine doubles, a triple, 14 home runs and 12 walks.

Mariners vs Orioles Head to Head

• 8/12/2025: 1-0 SEA (Favorite: Mariners, Spread: -1.5, Total: 9, Favorite Moneyline: -158, Underdog Moneyline: +134)
• 6/5/2025: 4-3 BAL (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -156, Underdog Moneyline: +132)
• 6/4/2025: 3-2 BAL (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 6/3/2025: 5-1 BAL (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -148, Underdog Moneyline: +126)
• 7/4/2024: 7-3 SEA (Favorite: Orioles, Spread: -1.5, Total: 7, Favorite Moneyline: -144, Underdog Moneyline: +122)
• 7/3/2024: 4-1 BAL (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -136, Underdog Moneyline: +116)
• 7/2/2024: 2-0 BAL (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 5/19/2024: 6-3 BAL (Favorite: Orioles, Spread: -1.5, Total: 7, Favorite Moneyline: -144, Underdog Moneyline: +122)
• 5/17/2024: 9-2 BAL (Favorite: Orioles, Spread: -1.5, Total: 8.5, Favorite Moneyline: -132, Underdog Moneyline: +112)
• 8/13/2023: 5-3 BAL (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -112, Underdog Moneyline: -104)

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