MLB Game Forecast for August 12: Mariners versus Orioles, Predicted Winners, Odds, Start Time, Top Picks by Accurate Model
The Seattle Mariners and Baltimore Orioles are all set to face off in an American League matchup on Tuesday, August 12, 2025, at Oriole Park at Camden Yards in Baltimore. The first pitch is scheduled for 6:35 p.m. ET.
Catcher Cal Raleigh, currently on a three-game hitting streak, will be a key player for the Mariners. Raleigh has been impressive this season, homering in all three weekend games against the Tampa Bay Rays, and boasts a .247 batting average with 16 doubles, 45 home runs, 98 RBI, and 78 runs scored in 116 games. In his 20 career games against the Orioles, Raleigh has managed a .221 average with four doubles, five homers, and 16 RBI.
On the mound for the Mariners, George Kirby, a right-handed pitcher with a 4.04 ERA, is expected to start. Kirby has pitched 78 innings this season, allowing 68 hits, 35 earned runs, and 20 walks, while striking out 83. He has also shown a strong performance against the Orioles this season, going 4-for-12 with one double, one homer, and four RBI.
The Orioles, who have struggled on their home field this season, are 28-29 at Oriole Park at Camden Yards in 2025. Baltimore is expected to start right-hander Dean Kremer (8-8, 4.35 ERA). Kremer has pitched 132.1 innings this season, allowing 134 hits, 66 runs, and 35 walks, while striking out 110.
Shortstop Gunnar Henderson has been a driving force for the Orioles' offense, with hits in eight of his last 10 games, including four in a row.
The total runs line, or the over/under, is set around 8.5 to 9, with some sources listing 9.5. The betting odds on the over/under are fairly balanced, with some leaning under 9 or 9.5 runs expected. Our website's model is leaning Over on the total, projecting 9.7 combined runs for the game.
In terms of betting, the Seattle Mariners are currently a -158 favorite on the money line. Some expert picks suggest betting on Baltimore's moneyline (+135) for an upset, while others favor Seattle's win given their strong recent form and 57.4% win probability from some models. The Seattle Mariners are favored by 1.5 runs (run line -1.5) with odds around -137 to +114, depending on the sportsbook. Baltimore is offered at +1.5 runs, with better odds for bettors taking the Orioles plus the run line.
Seattle is on a hot streak with a recent record of 9-1 over the past 10 games and looking for an eighth straight win. However, Baltimore has had more success in recent head-to-head meetings, winning six of the past seven games against Seattle, despite a worse overall season record.
Predictions slightly favor Seattle to win (often by a narrow margin) and lean toward a total run count near but possibly under 9 runs. This advice reflects current odds and expert analyses, emphasizing Seattle's form versus Baltimore's home advantage and past meetings.
[1] BettingPros - Seattle Mariners vs Baltimore Orioles Betting Preview, Prediction, and Picks
[2] Covers - Seattle Mariners at Baltimore Orioles Odds, MLB Betting Lines and Predictions
[3] SportsLine - Seattle Mariners vs. Baltimore Orioles: Odds, Line, Spread and Picks for Tuesday's Game
[4] ESPN - Seattle Mariners vs. Baltimore Orioles odds, picks and predictions
[5] FanDuel - Seattle Mariners vs. Baltimore Orioles: Odds, Spread, Over/Under and Betting Trends for August 12, 2025
- Key players for the Seattle Mariners include Catcher Cal Raleigh, who is on a three-game hitting streak, and George Kirby, the right-handed pitcher expected to start with a 4.04 ERA.
- Baltimore's Shortstop Gunnar Henderson has been a driving force for their offense, with hits in eight of his last 10 games.
- The Baltimore Orioles have struggled on their home field this season, with a record of 28-29 at Oriole Park at Camden Yards in 2025.
- The Seattle Mariners are currently a -158 favorite on the money line, with some experts suggesting betting on Baltimore's moneyline (+135) for an upset.
- The total runs line is set around 8.5 to 9.5, with some sources listing 9.5. Our website's model is leaning Over on the total, projecting 9.7 combined runs.
- Seattle is on a hot streak with a recent record of 9-1 over the past 10 games, but Baltimore has had more success in recent head-to-head meetings, winning six of the past seven games against Seattle.
