MLB Prop Bets: Seattle Mariners vs Toronto Blue Jays (July 3, 2026)
The Toronto Blue Jays (41-46) face the Seattle Mariners (45-43) at T-Mobile Park on Friday at 10:10pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Dylan Cease is the probable pitcher for the Blue Jays, while Luis Castillo is the probable pitcher for the Mariners. The Blue Jays are favored to win at -131, while the Mariners are at +109. The total runs line is set at 7.0, with OVER at -114 and UNDER at -105.
- The Blue Jays (+138) have a 43-44 Run Line record this season, while the Mariners (-167) hold a record of 37-51.
- The Blue Jays have a 43-41-3 O/U record this season (meaning 43 games have gone over the total runs line, 41 have gone under and three have resulted in a push). The Mariners have a 42-42-4 O/U record.
Scoring Insights
- The Blue Jays are averaging 4.1 runs per game this season (24th in the league). Comparatively, the Mariners are averaging 4.1 (26th).
- In the field, the Blue Jays are allowing 4.4 runs per game this season (12th 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 Blue Jays are at .248 (ranking 9th in the Major leagues), while the Mariners are batting .232 (26th).
Home Runs
- In terms of total home runs this season, the Mariners have hit 105 (12th in the Major Leagues). Meanwhile, the Blue Jays have managed 88 (23rd).
Runs Batted In
- Finally, looking at their runs batted in, the Blue Jays have recorded 340 RBIs to rank T25th in the MLB this season. Comparatively, the Mariners have recorded 345 RBIs to rank T22nd.
Pitching Insights:
Earned Run Average
- The Mariners have an earned run average of 3.65 this season (5th in the Majors), while The Blue Jays have an ERA of 4.08 (12th).
Strikeouts
- Turning our attention to total strikeouts, the Blue Jays have recorded 769 this season, ranking 8th in the MLB. Meanwhile, the Mariners rank T9th for total strikeouts, recording 768.
Opponent Batting Average
- Opponents are batting an average of .240 against the Mariners this season (14th in the Major Leagues). Comparatively, the Blue Jays' opponents are at .241 (15th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Blue Jays | 16-28-43 | 9-18-22 | 7-10-21 | 11-19-21 | 5-9-22 | 0-0-0 | 2-6-2 |
| Mariners | 22-20-46 | 13-11-20 | 9-9-26 | 21-17-39 | 1-3-7 | 0-0-0 | 1-3-6 |
Lead After Three Innings
The Blue Jays are -140 to lead after three innings, while the Mariners are +110.
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Blue Jays | 29-36-22 | 17-21-11 | 12-15-11 | 19-19-13 | 10-17-9 | 0-0-0 | 2-5-3 |
| Mariners | 37-28-23 | 20-13-11 | 17-15-12 | 30-26-21 | 7-2-2 | 0-0-0 | 2-3-5 |
NRFI/YRFI
The NRFI market is paying -150 and the YRFI is paying +115.
- The NRFI is 40-47 in Blue Jays games this season. The Mariners have a 41-47 NRFI record.
Last Time They Met
The Blue Jays recorded a 4-3 victory over the Mariners at Rogers Centre when these teams last met in the 2025 Championship Series. George Springer went yard en route to that victory, hitting a home run to go with 3 RBIs.
