Mariners vs Blue Jays Prediction, Odds, Moneyline, Spread & Over/Under for May 9

Odds updated as of 9:12 p.m.

In MLB action on Friday, the Seattle Mariners face the Toronto Blue Jays.

Before checking out the MLB betting lines on FanDuel Sportsbook, we've got you covered, in terms of the most important information regarding this matchup.

Mariners vs Blue Jays Game Info

• Seattle Mariners (22-14) vs. Toronto Blue Jays (17-20)
• Date: Friday, May 9, 2025
• Time: 9:40 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: ROOT Sports NW and SN1

Mariners vs Blue Jays Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-152) | TOR: (+128)
• Spread: SEA: -1.5 (+146) | TOR: +1.5 (-178)
• Total: 7 -- Over: (-122) | Under: (-100)

Mariners vs Blue Jays Probable Starting Pitchers

Probable Pitchers: Luis Castillo (Mariners) - 3-2, 3.29 ERA vs Kevin Gausman (Blue Jays) - 2-3, 3.83 ERA

The probable starters are Luis Castillo (3-2) for the Mariners and Kevin Gausman (2-3) for the Blue Jays. Castillo and his team have a record of 3-4-0 against the spread when he starts. Castillo's team has been victorious in 50% of the games he's started as the moneyline favorite with a record of 3-3. When Gausman starts, the Blue Jays have gone 3-4-0 against the spread. The Blue Jays have a 2-3 record in Gausman's five starts this season when they were the underdog on the moneyline.

Mariners vs Blue Jays Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (59.2%)

Mariners vs Blue Jays Moneyline

• Toronto is a +128 underdog on the moneyline, while Seattle is a -152 favorite at home.

Mariners vs Blue Jays Spread

• The Blue Jays are at the Mariners, and are +1.5 on the runline. The Blue Jays are +146 to cover the spread, and the Mariners are -178.

Mariners vs Blue Jays Over/Under

• Mariners versus Blue Jays on May 9 has an over/under of 7 runs, with the odds on the over -122 and the under set at -100.

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Mariners vs Blue Jays Betting Trends

• The Mariners have been favorites in 23 games this season and have come away with the win 15 times (65.2%) in those contests.
• Seattle has a record of 5-3 when favored by -152 or more this year.
• The Mariners and their opponents have gone over in 21 of their 36 games with a total set by sportsbooks this season.
• The Mariners have an against the spread record of 18-18-0 in 36 games with a line this season.
• The Blue Jays have won 43.5% of the games this season they were the underdog on the moneyline (10-13).
• Toronto has played as a moneyline underdog of +128 or longer in only two games this season, which it split 1-1.
• The Blue Jays have played in 36 games with a set over/under, and have combined with opponents to go over the total 17 times (17-18-1).
• The Blue Jays have a 22-14-0 record against the spread this season (covering 61.1% of the time).

Mariners Player Leaders

• Cal Raleigh leads Seattle in total hits (33) this season while batting .246 with 19 extra-base hits. He has an on-base percentage of .365 and a slugging percentage of .567.
• Among qualified batters in baseball, his batting average ranks 89th, his on-base percentage ranks 41st, and he is eighth in slugging.
• Raleigh has picked up at least one hit in two straight games. During his last five outings he is hitting .286 with a double, five walks and two RBIs.
• Jorge Polanco is hitting .348 with six doubles, nine home runs and seven walks. He's slugging .707 with an on-base percentage of .396.
• Julio Rodriguez is batting .228 with a .407 slugging percentage and 17 RBI this year.
• Rodriguez has picked up a hit in two games in a row. In his last five games he is hitting .300 with a home run, two walks and an RBI.
• J.P. Crawford has a slash line of .288/.408/.390 this season and a team-best OPS of .798.
• Crawford heads into this game on a 15-game hitting streak. During his last 10 outings he is batting .333 with a double, two home runs, seven walks and seven RBIs.

Blue Jays Player Leaders

• Vladimir Guerrero Jr. is batting .295 with seven doubles, four home runs and 20 walks. He's slugging .432 with an on-base percentage of .383.
• Including all the qualified hitters in the big leagues, he is 24th in batting average, 22nd in on-base percentage and 62nd in slugging percentage.
• Guerrero hopes to build on a 10-game hitting streak in this matchup. During his last 10 games he is batting .359 with a double, two home runs, five walks and six RBIs.
• George Springer paces his team with 31 hits and a .413 on-base percentage. He has a batting average of .298 while slugging .510.
• He is currently 18th in batting average, fifth in on-base percentage and 23rd in slugging percentage among all qualifying hitters.
• Bo Bichette has a .363 slugging percentage, which paces the Blue Jays.
• Anthony Santander has five doubles, five home runs and 16 walks while batting .196.

Mariners vs Blue Jays Head to Head

• 4/20/2025: 8-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 4/19/2025: 8-4 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 4/18/2025: 3-1 TOR (Favorite: Blue Jays, Spread: -1.5, Total: 8, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 7/7/2024: 5-4 TOR (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -148, Underdog Moneyline: +126)
• 7/6/2024: 5-4 TOR (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 7/5/2024: 2-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -134, Underdog Moneyline: +116)
• 4/10/2024: 6-1 SEA (Favorite: Blue Jays, Spread: -1.5, Total: 8.5, Favorite Moneyline: -118, Underdog Moneyline: -100)
• 4/9/2024: 5-3 TOR (Favorite: Blue Jays, Spread: -1.5, Total: 8, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 4/8/2024: 5-2 TOR (Favorite: Blue Jays, Spread: -1.5, Total: 7.5, Favorite Moneyline: -118, Underdog Moneyline: -100)
• 7/23/2023: 4-3 TOR (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -138, Underdog Moneyline: +118)

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