Seattle Mariners @ Baltimore Orioles Player Props, Picks and Predictions - 8/12/2025 6:35 PM EDT

We have your Seattle Mariners @ Baltimore Orioles prop betting and game preview needs covered as the Seattle Mariners hit the road to face the Baltimore Orioles.

Seattle Mariners @ Baltimore Orioles Pick

Best Moneyline Odds: Baltimore Orioles +150 (ESPN BET) / Seattle Mariners -167 (BetRivers)
Best Spread Odds: Seattle Mariners -1.5 (-102 Fanduel) / Baltimore Orioles +1.5 (-110 ESPN BET)
Best Total Odds: Over 9.0 (-114 DraftKings) / Under 9.5 (-130 ESPN BET)

Game Info

Date: August 12, 2025
Time: 6:35 PM EDT
Location: Oriole Park at Camden Yards
TV: RSNW

Seattle Mariners @ Baltimore Orioles Preview

The Seattle Mariners, currently boasting a strong 66-53 record, arrive in Baltimore on an impressive seven-game winning streak, having secured nine victories in their last ten outings. This red-hot form positions them as one of the most consistent teams in the league. Their offense has been a major factor, ranking third in home runs this season with 171. Key sluggers like Cal Raleigh, who leads the majors with 45 home runs, and Eugenio Suárez, with 37, have been instrumental in their success. On the mound, George Kirby (7-5, 4.04 ERA) will get the start for Seattle. Kirby has been in excellent form himself, winning his last three starts and posting a 6-1 record with a 2.83 ERA since the end of June. The Mariners' pitching staff as a whole holds a solid 3.81 ERA, ranking tenth in the league, with a batting average against of .238, ranking sixth.

Conversely, the Baltimore Orioles are navigating a challenging period, sitting at 53-65 and looking to snap a two-game losing streak. They've managed only three wins in their last ten games and hold a 28-29 home record. The Orioles' offense averages just over 4 runs per game, but their defense has struggled, conceding around 5 runs per match. Their home offense has been particularly underwhelming, scoring more than 3.5 runs in only one of their last seven games. Despite these struggles, the Orioles do possess power, ranking 11th in home runs with 144 this season, with players like Gunnar Henderson, Jackson Holliday, and Jordan Westburg each contributing 14 home runs. Dean Kremer (8-8, 4.35 ERA) will take the mound for Baltimore. Kremer has faced recent difficulties, allowing 12 runs in 17 innings over his last three starts. Oriole Park at Camden Yards is considered a slightly batter-friendly park with a Park Factor of 101 and a higher home run factor of 108, which could play into the hands of both teams' power hitters.

Historic Head-to-Head Stats and Analysis

The Baltimore Orioles have had the upper hand in the season series against the Seattle Mariners, leading 3-0. In their last head-to-head clash on June 5, the Orioles secured a narrow 4-3 victory. Across these three matchups, Seattle's offense was largely contained, scoring a total of only six runs. Looking at individual pitching matchups, Mariners' starter George Kirby holds a career record of 1-5 with a 3.80 ERA in seven starts against the Orioles. For the Orioles, Dean Kremer has a favorable 1-0 record with a 2.57 ERA in five career starts against Seattle, accumulating 25 strikeouts in 28 innings.

Pick: Seattle Mariners Moneyline

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The Seattle Mariners are the clear pick in this matchup. They are currently one of the hottest teams in MLB, riding a seven-game winning streak and winning nine of their last ten. Their starting pitcher, George Kirby, has been in dominant form, winning his last three starts and boasting a 6-1 record with a 2.83 ERA since late June. While the Orioles have had success against the Mariners in previous head-to-head matchups this season, their current form is concerning, having lost two straight and only winning three of their last ten games. Orioles' starter Dean Kremer has also struggled recently, allowing 12 runs in his last three outings. The sharp money is heavily leaning towards the Mariners, with a 61.62% visitor sharp win percentage on the moneyline. NumberFire's prediction also gives the Mariners a 58% chance of winning. Given Seattle's momentum, strong pitching, and offensive firepower, they are well-positioned to secure their eighth consecutive win.

Top Player Prop Picks

Gunnar Henderson Over 0.5 Home Runs

Gunnar Henderson has shown a strong ability to hit for power, and his individual matchup against Mariners' starter George Kirby is particularly favorable. In 13 plate appearances against Kirby, Henderson has recorded 6 hits, including 1 home run, resulting in an impressive .769 slugging percentage and a .525 wOBA. His expected slugging percentage (xSLG) of .577 and expected wOBA (xwOBA) of .392 further support his strong hitting profile against Kirby. Additionally, Henderson is noted in the news as one of the Orioles' power hitters with 14 home runs this season. Given his past success against Kirby and his overall power numbers, betting on Henderson to hit a home run is a compelling play.

Julio Rodríguez Over 1.5 Total Bases

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Julio Rodríguez has an exceptional historical performance against Orioles' starter Dean Kremer, making him a prime candidate for an over on total bases. In just 8 plate appearances against Kremer, Rodríguez has amassed 5 hits, including 1 double and 1 home run, leading to an astounding 1.125 slugging percentage and a .739 wOBA. His expected slugging percentage (xSLG) of 1.237 and expected wOBA (xwOBA) of .735 are also remarkably high, indicating sustained hard contact. With such dominant numbers in a limited sample size, Rodríguez is poised for a strong offensive outing against Kremer.

Cal Raleigh Over 1.5 Total Bases

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Cal Raleigh has been a consistent power threat for the Seattle Mariners this season, leading the entire league with 45 home runs. While his career head-to-head numbers against Dean Kremer (1 hit in 8 plate appearances) are not overwhelmingly strong, the small sample size may not fully reflect his current elite power production. Raleigh's ability to hit for extra bases, particularly home runs, makes him a strong candidate to exceed 1.5 total bases in any given game, especially considering his league-leading home run total. His overall season performance and impact on the Mariners' offense suggest he can overcome a limited historical matchup.

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