The Orioles (35-40) and the Mariners (38-37) wrap up their series in Seattle this afternoon with both clubs having taken a game following last night’s 5-3 win for Baltimore.
Last night’s matchup was driven by Baltimore’s pitching, as the Orioles earned a 5–3 win behind a dominant outing from Kyle Bradish. The right-hander struck out a career-high 12 batters over 7.2 innings, allowing just one earned run. Offensively, Gunnar Henderson provided the early spark with a two-run homer in the third, while Jackson Holliday added insurance with a solo shot in the ninth. Blaze Alexander was a key catalyst as well, going 3-for-3 with a walk and a stolen base. Baltimore built a 5–1 lead before things got interesting late, as the Mariners got back-to-back home runs from Dominic Canzone and Cole Young in the ninth to close the gap, but Ryan Helsley recovered to secure the win.
Thursday’s pitching matchup features two right-handers with similar underwhelming stats. The Orioles will send Shane Baz (4–6, 4.06 ERA) to the mound, while the Mariners counter with Bryan Woo (5–5, 4.28 ERA). Baz’ season has mirrored that of his team: OK but inconsistent and, frankly, should be better. Woo has shown better control (just 15 walks on the season) and a slightly higher strikeout rate than Baz but he too has underachieved to this point in the season.
The status of both Julio Rodríguez (day-to-day with a hamstring issue) and Randy Arozarena (day-to-day with a hamstring issue) is worth monitoring heading into the series finale.
Lets dive into tonight’s matchup and find a sweat or two.
We’ve got all the info and analysis you need to know ahead of the game, including the latest info on the how to catch first pitch, odds, recent team performance, player stats, and of course, our predictions, picks & best bets for the game from our modeling tools and staff of experts.
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Game Details and How to Watch: Orioles vs. Mariners
- Date: Thursday, June 18, 2026
- Time: 4:10PM EST
- Site: T-Mobile Park
- City: Seattle, WA
- Network/Streaming: MLB.TV, Mariners.TV, MASN
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The Latest Odds: Orioles vs. Mariners
The latest odds as of Thursday courtesy of DraftKings:
- Moneyline: Baltimore Orioles (+123), Seattle Mariners (-149)
- Spread: Orioles +1.5 (-171), Mariners -1.5 (+141)
- Total: 7.5 runs
Starting Pitchers and their Stats: Orioles vs. Mariners for June 18
- Orioles: Shane Baz
Season Totals: 82.0 IP, 4-6, 4.06 ERA, 1.39 WHIP, 67K, 32 BB - Mariners: Bryan Woo
Season Totals: 82.0 IP, 5-5, 4.28 ERA, 1.04 WHIP, 79K, 15 BB
Who’s Hot? Who’s Not! Orioles vs. Mariners
- Gunnar Henderson continues to wander through the season going 3-16 over his last 4 games
- Pete Alonso has hit safely in 7 of his last 8 games (10-28) with 3 HRs
- Jackson Holliday went 1-3 yesterday to break an 0-12 streak
- Cole Young has hit safely in 6 of his last 7 games (10-31)
- Dominic Canzone has hit safely in 7 straight games (9-23)
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Top Betting Trends & Insights: Orioles vs. Mariners
- The O’s are 36-39 on the Run Line this season
- The Mariners are an AL-worst 29-46 on the Run Line this season
- The OVER has cashed 37 times in games involving Seattle this season (37-35-3)
- The OVER has cashed 43 times in games involving the Orioles this season (43-29-3)
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Expert picks & predictions: Orioles vs. Mariners
Rotoworld Bet Best Bet
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Our model calculates projections around each moneyline, spread and over/under bet for every game on the MLB calendar based on data points like past performance, player matchups, ballpark information and weather forecasts.
Once the model is finished running, we put its projection next to the latest betting lines for the game to arrive at a relative confidence level for each wager.
Here are the best bets our model is projecting for today’s game between the Orioles and the Mariners:
- Moneyline: Rotoworld Bet is recommending a play on the Orioles on the Moneyline.
- Spread: Rotoworld Bet is leaning towards a play on the Orioles on the Run Line.
- Total: Rotoworld Bet is leaning towards a play on the Game Total OVER 7.5
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