The Seattle Mariners host the Baltimore Orioles on June 18, 2026. First pitch from T-Mobile Park is scheduled for 4:10 p.m. EDT. The game will be broadcast on MASN.
The Mariners are favored by -154 on the moneyline and by -1.5 on the run line. The Orioles are +130 on the moneyline and +1.5 on the run line. The total is set at 7.5 runs.
Find my MLB picks and Orioles vs Mariners prediction below, as well as probable pitchers, weather report, and more.
Orioles vs Mariners Prediction
- Orioles vs Mariners Pick: Under 7.5 (-110 or Better)
My Orioles vs Mariners best bet is on the Under. Make sure to find the best odds by checking our live MLB odds page.
Orioles vs Mariners Odds
| Orioles Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+1.5 -172 | 7.5 -115o / -105u | +130 |
| Mariners Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-1.5 +142 | 7.5 -115o / -105u | -154 |
- Orioles vs Mariners moneyline: Orioles +130, Mariners -154
- Orioles vs Mariners over/under: 7.5 (-115 / -105)
- Orioles vs Mariners spread: Mariners -1.5 (+142), Orioles +1.5 (-172)
Orioles vs Mariners Probable Pitchers
| Shane Baz (RHP, BAL) | Stat | Bryan Woo (RHP, SEA) |
|---|---|---|
| 4-6 | W-L | 5-5 |
| 1.2 | fWAR (FanGraphs) | 2.0 |
| 4.06 / 4.72 | ERA / xERA | 4.28 / 3.30 |
| 4.01 / 4.52 | FIP / xFIP | 3.26 / 3.79 |
| 9.9% | K-BB% | 19.5% |
| 36.8% | GB% | 35.5% |
| .302 | BABIP | .274 |
| 99 | Stuff+ | 110 |
| 100 | Location+ | 108 |
Orioles vs Mariners MLB Betting Preview
This game triggered one of our Action PRO bet labs systems, powered by Evan Abrams:
The Silent Sharp Unders system targets regular-season MLB games where both teams are performing well, yet the total has quietly dropped from open to close.
These are games featuring competent, winning teams with recent success, stable weather conditions, and closing totals in a common scoring range.
Despite both teams showing strength, the market subtly favors the Under, likely due to matchup specifics, pitching, or pace factors.
By following this soft signal — when the public eye is more focused on win streaks and not totals — this system finds value in betting against inflated scoring expectations.
Orioles vs Mariners Pick, Betting Analysis
Zerillo projects just 7.15 runs for this game, as you can see in our new BARTOLO tool, available to PRO subscribers tomorrow:
Bryan Woo is having another fantastic season, with a 20% strikeout minus walk rate and earned run estimators in the low-threes. While he's off back-to-back blow-up starts (7 ER vs BAL, 5 ER vs DET), this is a good bounce-back spot for him against a Baltimore offense that projects as average against Southpaw pitchers.
While Shane Baz is struggling and the Seattle offense is heating up, these are also two top-10 bullpens, and Seattle is one of the worst run environments in the league, especially with the wind blowing in from left field.
Pick: Under 7.5 (-110 or Better)
