MLB Prop Bets: Seattle Mariners vs Baltimore Orioles (June 17, 2026)
The Baltimore Orioles (34-40) face the Seattle Mariners (38-36) at T-Mobile Park on Wednesday at 9:40pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Kyle Bradish is the probable pitcher for the Orioles, while George Kirby is the probable pitcher for the Mariners. The Mariners are favored to win at -149, while the Orioles are at +123. The total runs line is set at 7.5, with OVER at -112 and UNDER at -107.
- The Orioles (-180) have a 35-39 Run Line record this season, while the Mariners (+148) hold a record of 31-43.
- The Orioles have a 40-29-5 O/U record this season (meaning 40 games have gone over the total runs line, 29 have gone under and five have resulted in a push). The Mariners have a 36-34-4 O/U record.
Scoring Insights
- The Orioles are averaging 4.6 runs per game this season (9th in the league). Comparatively, the Mariners are averaging 4.2 (18th).
- In the field, the Orioles are allowing a whopping 5.1 runs per game this season (27th in the league), while the Mariners are allowing an average of 3.9 runs (5th).
Let's take a look at how these teams perform in some other key statistical areas.
Batting Insights:
Batting Average
- Looking at their batting averages this season, the Orioles are at .241 (ranking 18th in the Major leagues), while the Mariners are batting .237 (23rd).
Home Runs
- In terms of total home runs this season, the Mariners have hit 94 (T8th in the Major Leagues). Meanwhile, the Orioles have managed 86 (13th).
Runs Batted In
- Finally, looking at their runs batted in, the Orioles have recorded 334 RBIs to rank 8th in the MLB this season. Comparatively, the Mariners have recorded 305 RBIs to rank 16th.
Pitching Insights:
Earned Run Average
- The Mariners have an earned run average of 3.65 this season (5th in the Majors), while The Orioles have an ERA of 4.57 (24th).
Strikeouts
- Turning our attention to total strikeouts, the Orioles have recorded 561 this season, ranking 26th in the MLB. Meanwhile, the Mariners rank 9th for total strikeouts, recording 637.
Opponent Batting Average
- Opponents are batting an average of .241 against the Mariners this season (15th in the Major Leagues). Comparatively, the Orioles' opponents are at .260 (28th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Orioles | 11-18-45 | 6-9-26 | 5-9-19 | 5-6-25 | 6-12-20 | 0-0-0 | 3-2-5 |
| Mariners | 19-17-38 | 11-10-15 | 8-7-23 | 19-15-32 | 0-2-6 | 0-0-0 | 1-3-6 |
Lead After Three Innings
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Orioles | 24-29-21 | 18-14-9 | 6-15-12 | 11-14-11 | 13-15-10 | 0-0-0 | 4-3-3 |
| Mariners | 33-23-18 | 18-10-8 | 15-13-10 | 28-21-17 | 5-2-1 | 0-0-0 | 3-4-3 |
NRFI/YRFI
The NRFI market is paying -140 and the YRFI is paying +110.
- The NRFI is 41-33 in Orioles games this season. The Mariners have a 33-41 NRFI record.
Last Time They Met
The Mariners recorded a 3-1 victory over the Orioles at T-Mobile Park yesterday. Cal Raleigh went yard en route to that victory, hitting a home run to go with 2 RBIs. That result snapped the Orioles' three-game winning streak against the Mariners at T-Mobile Park.
