Mariners vs Orioles Prediction, Odds, Moneyline, Spread & Over/Under for June 17

Odds updated as of 9:11 p.m.

The Seattle Mariners versus the Baltimore Orioles is on the MLB schedule for Wednesday.

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

Mariners vs Orioles Game Info

• Seattle Mariners (38-36) vs. Baltimore Orioles (34-40)
• Date: Wednesday, June 17, 2026
• Time: 9:40 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: Mariners.TV and MASN

Mariners vs Orioles Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-156) | BAL: (+132)
• Spread: SEA: -1.5 (+140) | BAL: +1.5 (-170)
• Total: 7.5 -- Over: (-122) | Under: (+100)

Mariners vs Orioles Probable Starting Pitchers

Probable Pitchers: George Kirby (Mariners) - 5-6, 4.07 ERA vs Kyle Bradish (Orioles) - 3-7, 4.30 ERA

The Mariners will give the nod to George Kirby (5-6, 4.07 ERA), who is eyeing win No. 6 on the season, and the Orioles will counter with Kyle Bradish (3-7, 4.30 ERA). When Kirby starts, his team is 5-9-0 against the spread this season. Kirby's team is 7-7 this season when he starts and they are the moneyline favorite. The Orioles are 6-8-0 against the spread when Bradish starts. The Orioles have been the underdog on the moneyline in five of Bradish's starts this season, and they went 3-2 in those games.

Mariners vs Orioles Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (67.3%)

Mariners vs Orioles Moneyline

• Looking at the moneyline for Orioles-Mariners, Baltimore is the underdog at +132, and Seattle is -156 playing at home.

Mariners vs Orioles Spread

• The Orioles are at +1.5 on the runline against the Mariners. The Orioles are -170 to cover the spread, and the Mariners are +140.

Mariners vs Orioles Over/Under

• The over/under for the Mariners versus Orioles contest on June 17 has been set at 7.5, with -122 odds on the over and +100 odds on the under.

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

Mariners vs Orioles Betting Trends

• The Mariners have been favorites in 66 games this season and have come away with the win 35 times (53%) in those contests.
• Seattle has a record of 7-6 in contests when sportsbooks favor them by -156 or more on the moneyline.
• The Mariners and their opponents have gone over in 35 of their 73 games with a total set by sportsbooks this season.
• The Mariners have an against the spread mark of 27-46-0 in 73 games with a line this season.
• The Orioles have won 43.2% of the games this season they were the moneyline underdog (16-21).
• Baltimore has a 1-4 record (winning just 20% of its games) when it has played as a moneyline underdog of +132 or longer.
• The Orioles have played in 74 games with a set over/under, and have combined with opponents to go over the total 43 times (43-28-3).
• The Orioles have a 35-39-0 record against the spread this season (covering 47.3% of the time).

Mariners Player Leaders

• Julio Rodriguez is hitting .248 with 14 doubles, 13 home runs and 25 walks. He has an on-base percentage of .310 while slugging .426.
• Among all qualifying hitters in baseball, he is 88th in batting average, 115th in on-base percentage, and 75th in slugging.
• Josh Naylor is hitting .253 with eight doubles, eight home runs and 23 walks. He's slugging .372 with an on-base percentage of .315.
• His batting average ranks 78th among qualified players, his on-base percentage 105th, and his slugging percentage 117th.
• Dominic Canzone has collected 47 base hits, an OBP of .357 and a slugging percentage of .555 this season.
• Canzone has picked up a hit in six games in a row. During his last 10 outings he is hitting .400 with two doubles, a triple, three home runs, three walks and six RBIs.
• J.P. Crawford has 10 home runs, 23 RBI and a batting average of .231 this season.
• Crawford has safely hit in three games in a row. In his last five games he is hitting .385 with a double, a home run, five walks and an RBI.

Orioles Player Leaders

• Pete Alonso has a slugging percentage of .470 and has 70 hits, both team-high numbers for the Orioles. He's batting .251 and with an on-base percentage of .338.
• Including all the qualifying players in the big leagues, he is 81st in batting average, 76th in on-base percentage and 43rd in slugging percentage.
• Taylor Ward leads his team with a .402 on-base percentage. He has a batting average of .257 while slugging .354.
• Including all qualified hitters, his batting average places him 68th, his on-base percentage is fifth, and he is 130th in slugging.
• Adley Rutschman is batting .264 with 15 doubles, a triple, eight home runs and 23 walks.
• Gunnar Henderson has 13 doubles, a triple, 14 home runs and 26 walks while hitting .224.

Mariners vs Orioles Head to Head

• 6/16/2026: 3-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -146, Underdog Moneyline: +124)
• 6/11/2026: 7-5 BAL (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 6/10/2026: 7-2 BAL (Favorite: Mariners, Spread: -1.5, Total: 9, Favorite Moneyline: -110, Underdog Moneyline: -106)
• 6/9/2026: 6-5 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -122, Underdog Moneyline: +104)
• 6/8/2026: 6-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 9, Favorite Moneyline: -130, Underdog Moneyline: +110)
• 8/14/2025: 5-3 BAL (Favorite: Mariners, Spread: -1.5, Total: 9.5, Favorite Moneyline: -132, Underdog Moneyline: +112)
• 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)

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