Blue Jays vs Mariners Prediction, Odds, Moneyline, Spread & Over/Under for July 3

Odds updated as of 5:12 a.m.

The MLB slate on Friday includes the Toronto Blue Jays facing the Seattle Mariners.

We've got you covered, in terms of the vital info regarding this matchup before you take a look at the MLB odds and spreads on FanDuel Sportsbook.

Blue Jays vs Mariners Game Info

• Toronto Blue Jays (41-46) vs. Seattle Mariners (45-43)
• Date: Friday, July 3, 2026
• Time: 10:10 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: Mariners.TV and SNET

Blue Jays vs Mariners Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: TOR: (-124) | SEA: (+106)
• Spread: TOR: -1.5 (+140) | SEA: +1.5 (-170)
• Total: 7.5 -- Over: (+102) | Under: (-124)

Blue Jays vs Mariners Probable Starting Pitchers

Probable Pitchers: Dylan Cease (Blue Jays) - 4-4, 3.02 ERA vs Luis Castillo (Mariners) - 3-6, 4.93 ERA

The probable pitchers are Dylan Cease (4-4) for the Blue Jays and Luis Castillo (3-6) for the Mariners. Cease and his team are 9-6-0 ATS this season when he starts. Cease's team is 8-5 this season when he starts and they are the moneyline favorite. The Mariners have gone 4-9-0 against the spread when Castillo starts. The Mariners have a 1-2 record in Castillo's three starts this season when they were the underdog on the moneyline.

Blue Jays vs Mariners Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Blue Jays win (55.5%)

Blue Jays vs Mariners Moneyline

• Seattle is the underdog, +106 on the moneyline, while Toronto is a -124 favorite despite being on the road.

Blue Jays vs Mariners Spread

• The Mariners are hosting the Blue Jays, and are +1.5 on the runline. The Mariners are +140 to cover the spread, and the Blue Jays are -170.

Blue Jays vs Mariners Over/Under

• Blue Jays versus Mariners, on July 3, has an over/under of 7.5, with the over being +102 and the under -124.

Bet on Toronto Blue Jays vs. Seattle Mariners on FanDuel today!

Blue Jays vs Mariners Betting Trends

• The Blue Jays have won in 27, or 55.1%, of the 49 contests they have been named as odds-on favorites in this year.
• This season Toronto has been victorious 18 times in 36 chances when named as a favorite of at least -124 on the moneyline.
• The Blue Jays and their opponents have hit the over in 45 of their 86 games with a total set by oddsmakers this season.
• In 86 games with a line this season, the Blue Jays have a mark of 41-45-0 against the spread.
• The Mariners have been the underdog on the moneyline eight total times this season. They've finished 2-6 in those games.
• Seattle has not played a game this season with moneyline odds of +106 or longer.
• The Mariners have combined with opponents to hit the over on the total 41 times this season for a 41-43-3 record against the over/under.
• The Mariners have covered only 36.8% of their games this season, going 32-55-0 ATS.

Blue Jays Player Leaders

• Vladimir Guerrero Jr. has 81 hits this season and a team-best OBP of .348. He has a .267 batting average and a slugging percentage of .350.
• Among all qualified hitters, he is 57th in batting average, his on-base percentage ranks 50th, and he is 134th in slugging.
• Guerrero hopes to build on a two-game hitting streak in this matchup. In his last five games he is hitting .190 with a double, a walk and two RBIs.
• Ernie Clement leads Toronto in slugging percentage (.439) thanks to 30 extra-base hits. He's batting .299 with an on-base percentage of .322.
• He is 10th in batting average, 95th in on-base percentage and 67th in slugging in the major leagues.
• Kazuma Okamoto leads Toronto in total hits (73) this season, and 30 of those have gone for extra bases.
• Daulton Varsho is batting .258 with a .327 OBP and 23 RBI for Toronto this season.
• Varsho has hit safely in three games in a row. During his last five outings he is hitting .158 with a double, a walk and an RBI.

Mariners Player Leaders

• Julio Rodriguez has accumulated a slugging percentage of .424, a team-best for the Mariners. He's batting .259 with an on-base percentage of .323.
• Including all the qualified hitters in the majors, he is 70th in batting average, 89th in on-base percentage and 80th in slugging percentage.
• Randy Arozarena paces his team with 83 hits and a .375 on-base percentage. He has a batting average of .284 while slugging .442.
• His batting average is 25th among all qualified players, his on-base percentage ranks 20th, and he is 65th in slugging.
• Josh Naylor is hitting .254 with 11 doubles, eight home runs and 27 walks.
• Cole Young is hitting .259 with 12 doubles, a triple, nine home runs and 23 walks.

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