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

Odds updated as of 6:12 a.m.

The MLB's Friday schedule includes the Toronto Blue Jays facing the Seattle Mariners.

Here's what you need to know before checking out today's 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

This contest's pitching matchup is set, as the Blue Jays will send Dylan Cease (4-4) to the mound, while Luis Castillo (3-6) will get the nod for the Mariners. When Cease starts, his team is 9-6-0 against the spread this season. Cease's team has won 61.5% of his starts when they are favored on the moneyline (8-5). The Mariners have a 4-9-0 record against the spread in Castillo's starts. The Mariners are 1-2 in Castillo's three starts this season that 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

• The Blue Jays vs Mariners moneyline has Toronto as a -124 favorite, while Seattle is a +106 underdog at home.

Blue Jays vs Mariners Spread

• The Blue Jays are favored by 1.5 runs on the road against the Mariners. The Blue Jays are +140 to cover the spread, while the Mariners are -170.

Blue Jays vs Mariners Over/Under

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

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

Blue Jays vs Mariners Betting Trends

• The Blue Jays have been favorites in 49 games this season and have come away with the win 27 times (55.1%) in those contests.
• Toronto has a record of 18-18 when favored by -124 or more this year.
• The Blue Jays' games have gone over the total in 45 of their 86 opportunities.
• The Blue Jays have an against the spread record of 41-45-0 in 86 games with a line this season.
• The Mariners have compiled a 2-6 record in games they were listed as the moneyline underdog (winning 25% of those games).
• Seattle has not yet played as a moneyline underdog of +106 or longer.
• The Mariners have played in 87 games with an over/under set, and have combined with opponents to go over the total 41 times (41-43-3).
• The Mariners have a 32-55-0 record against the spread this season (covering just 36.8% of the time).

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 in the majors, his batting average ranks 57th, his on-base percentage ranks 50th, and he is 134th in slugging.
• Guerrero has recorded a base hit in two games in a row. In his last five games he is batting .190 with a double, a walk and two RBIs.
• Ernie Clement has hit seven homers this season while driving in 29 runs. He's batting .299 this season and slugging .439 with an on-base percentage of .322.
• He is 10th in batting average, 95th in on-base percentage and 67th in slugging in MLB.
• Kazuma Okamoto leads Toronto with 73 hits. He is batting .240 this season and 30 of his hits have gone for extra bases.
• Daulton Varsho is batting .258 with a .327 OBP and 23 RBI for Toronto this season.
• Varsho has safely hit in three games in a row. In his last five games 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.
• He is 70th in batting average, 89th in on-base percentage and 80th in slugging percentage among all qualifying batters in MLB.
• Randy Arozarena's 83 hits and .375 OBP both lead his team. He has a batting average of .284 while slugging .442.
• His batting average ranks 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 has 12 doubles, a triple, nine home runs and 23 walks while hitting .259.

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