Slumping Mariners Happy to See Toronto Coming to Town
Blue Jays vs Mariners Run Line Lists Seattle As the Fave in Friday's Opener

Mariners Hoping To Reverse Losing Trend Against AL East Teams
The Seattle Mariners avoided being swept by the Baltimore Orioles with a much-needed win on Thursday but are still 8-12 against American League East teams. Perhaps a matchup with the AL East cellar-dwelling Toronto Blue Jays will alter Seattle’s fortunes. The Blue Jays vs Mariners run line has Seattle to add to the woes for the Blue Jays.
Toronto won two of the three games versus the Mariners in April as Isiah Kiner-Falefa and Justin Turner were a combined 10-of-18 with four doubles. Seattle has won eight of its last 10 home games against the Blue Jays.
The MLB best bets today list Seattle at -140 to win Friday’s series opener. The Mariners are priced at +150 at -1.5 on the run line. Toronto has +120 odds to win on Friday and avoid falling 10 games under .500.
Seattle is tied for sixth at +1600 in the World Series odds with Toronto well back at +15000 in the championship odds.
Blue Jays vs Mariners 
📊Records: Toronto Blue Jays 39-48 at Seattle Mariners 48-41
⏰Day/Time:
📍Location: T-Mobile Park, Seattle, WA
📺Streaming: Sportsnet, Root Sports Northwest.
Probable Starting Pitchers
- Friday: Kevin Gausman (Blue Jays); Luis Castillo (Mariners)
- Saturday: Yariel Rodriguez (Blue Jays); TBA (Mariners)
- Sunday: Jose Berrios (Blue Jays); George Kirby (Mariners)
Vlad Might Be Glad To Be On the Road
Vlad Guerrero Jr. has been bringing the power when the Toronto Blue Jays head on the road.
He has more home runs and a better slugging percentage in road games despite posting a much higher batting average at home. Keep that in mind when it comes to the Blue Jays vs Mariners run line odds.
In a recently completed five-game road trip, Guerrero was 9-for-22 with five runs, three doubles, two home runs, and 10 RBIs. All three of his hits in three games in Seattle during the 2023 season went for extra bases. That production is crucial because many of his teammates are struggling on the road this season.
Nine of Toronto’s last 11 games went over the total.

Are Rodriguez, Crawford Ready to Turn It Around?
The hitting numbers are pretty ugly as the Seattle Mariners have the lowest batting average in the majors.
It has been dangerous to roll with top Mariners hitters, if there is just a thing as a top Mariners hitter right now, in the player prop bets.
However, the last time out Julio Rodriguez and J.P. Crawford combined for four hits, two doubles, a home run, three runs, and four RBIs in a win over the Baltimore Orioles. In the previous five games, they were 5-for-22 with no extra-base hits, no RBIs, and eight strikeouts. If they can build on Thursday’s win, that could impact the Blue Jays vs Mariners run line.
Life, Liberty and the Pursuit of Dingers pic.twitter.com/HpUGFjifxL
— Seattle Mariners (@Mariners) July 4, 2024
While Seattle has been winning with inconsistent production on offense, the Mariners must be hearing the footsteps of the red-hot Houston Astros cutting into Seattle’s lead in the AL West.
Four of Seattle’s last six games finished under the total.
Who’s Hot
- Mitch Garver, Seattle Mariners C-DH: Garver has three home runs over his last eight games.
- Brendon Little, Toronto Blue Jays P: Little has allowed one hit and one run with five strikeouts in 4.2 innings over his last five games.
- Collin Snider, Seattle Mariners P: Snider has given up four hits and no runs with five strikeouts over six innings in his last six appearances.
- George Springer, Toronto Blue Jays OF: Springer is 14-for-30 (2-4) with seven runs, three home runs, and 13 RBIs over his last eight games.
Who’s Not
- Luis Castillo, Seattle Mariners P: Castillo is 0-2 with an ERA of 7.04 and three home runs allowed over his last three starts.
- Kevin Gausman, Toronto Blue Jays P: Gausman is 2-4 with a 5.65 ERA and nine home runs allowed over his last six starts.
- Kevin Kiermaier, Toronto Blue Jays OF: Kiermaier is 0-for-11 with six strikeouts in his last four games.
- Josh Rojas, Seattle Mariners 3B: Rojas 6-30 with 10 strikeouts in his last 10 games.
Blue Jays vs Mariners Injury Update
Infielder Bo Bichette is questionable for Toronto while infielder Justin Turner is on the paternity list and infielder Joey Votto is on the injured list. The biggest news could be the recent knee injury suffered by third baseman Isiah Kiner-Falefa.
Pitchers Heath Hembree, Gregory Santos, Gabe Speier, and Bryan Woo are on the MLB injured list for the Mariners.
Blue Jays vs Mariners Betting Preview
This has been a bit of a low-scoring series as of late with just two of the last nine games between the Mariners and the Blue Jays landing over the total. The total is at 7.5 for Friday’s series opener despite the recent struggles of Seattle’s Luis Castillo as he is slated to start on Friday.
The teams are separated by eight games with the MLB division standings showing that Seattle leads the American League West Division by two games over the Houston Astros. Toronto is the only team from the American League East with a losing record.
Seattle is 29-16 at home and 30-21 as a favorite this season. Toronto is just 10-26 as an underdog.
The Mariners have covered in just 15 of 34 games as the home favorite while Toronto is 14-11 against the run line as a road underdog.
With MLB news and rumors swirling about the Blue Jays being a seller at the trade deadline, July will be an interesting month for a team that posted winning records in each of the previous four seasons with three playoff appearances during that time.
Nine of Seattle’s last 12 home games landed under the total. Will that continue with Castillo pitching in the series opener?
Blue Jays vs Mariners Betting Lines
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