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

Odds updated as of 11:11 a.m.

MLB action on Friday includes the Seattle Mariners taking on the Toronto Blue Jays.

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

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: (-136) | TOR: (+116)
• Spread: SEA: -1.5 (+152) | TOR: +1.5 (-184)
• Total: 7.5 -- Over: (-100) | Under: (-122)

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 pitchers are Luis Castillo (3-2) for the Mariners and Kevin Gausman (2-3) for the Blue Jays. Castillo's team is 3-4-0 against the spread in his starts this season. Castillo's team is 3-3 this season when he starts and they are the moneyline favorite. The Blue Jays are 3-4-0 ATS in Gausman's seven starts that had a set spread. The Blue Jays are 2-3 in Gausman's five starts this season that they were the moneyline underdog.

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 the underdog, +116 on the moneyline, while Seattle is a -136 favorite at home.

Mariners vs Blue Jays Spread

• The Mariners are 1.5-run home favorites on the runline against the Blue Jays. The Mariners are +152 to cover, and the Blue Jays are -184.

Mariners vs Blue Jays Over/Under

• A combined run total of 7.5 has been set for Mariners-Blue Jays on May 9, with the over at -100 and the under at -122.

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

Mariners vs Blue Jays Betting Trends

• The Mariners have come away with 15 wins in the 23 contests they have been listed as the favorites in this season.
• This season Seattle has been victorious 10 times in 13 chances when named as a favorite of at least -136 on the moneyline.
• Contests with the Mariners have gone over the total set by oddsmakers in 21 of 36 chances this season.
• In 36 games with a line this season, the Mariners have a mark of 18-18-0 against the spread.
• The Blue Jays have a 10-13 record in games they were listed as the moneyline underdog (winning 43.5% of those games).
• When it has played as a moneyline underdog with odds of +116 or longer, Toronto has a record of 3-3 (50%).
• The Blue Jays have played in 36 games with an over/under set, and have combined with their 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 hitters in MLB, his batting average ranks 89th, his on-base percentage ranks 41st, and he is eighth in slugging.
• Raleigh will look for his third straight game with a hit in this matchup. During his last five outings he is batting .286 with a double, five walks and two RBIs.
• Jorge Polanco is batting .348 with six doubles, nine home runs and seven walks, while 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 logged a hit or more in two games in a row. During his last five outings 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 enters this game on a 15-game hitting streak. In his last 10 outings he is hitting .333 with a double, two home runs, seven walks and seven RBIs.

Blue Jays Player Leaders

• Vladimir Guerrero Jr. has seven doubles, four home runs and 20 walks while hitting .295. He's slugging .432 with an on-base percentage of .383.
• Including all the qualified hitters in MLB, his batting average is 24th, his on-base percentage ranks 22nd, and he is 62nd in slugging.
• Guerrero enters this game on a 10-game hitting streak. In his last 10 games he is hitting .359 with a double, two home runs, five walks and six RBIs.
• George Springer's 31 hits and .413 on-base percentage both lead his team. He has a batting average of .298 while slugging .510.
• His batting average ranks 18th among all qualified players, his on-base percentage is fifth, and he is 24th in slugging.
• Bo Bichette has a team-best .363 slugging percentage.
• Andres Gimenez has five doubles, three home runs and 10 walks while batting .195.

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)

Sign up for FanDuel Sportsbook and FanDuel Daily Fantasy today!