Seattle Mariners vs Toronto Blue Jays Prediction 7/3/26 MLB Picks Today

The Toronto Blue Jays and the Seattle Mariners meet Friday in MLB action from T-Mobile Park. We will look at this from a betting perspective and determine the best bets for this game. Here’s a Toronto Blue Jays vs. Seattle Mariners prediction.

Starting Pitching Matchup

The Toronto Blue Jays will send out Dylan Cease for the start here and Cease is 4-4 with a 3.02 ERA and 128 strikeouts this season. Luis Castillo will start for the Mariners here and is 3-6 with a 4.93 ERA and 73 strikeouts this season.

Toronto Blue Jays Recap

The Toronto Blue Jays come into this game looking to add on to their 9-3 win over the Mets last time out to sit at 41-46 this season. After this series, the Blue Jays will head on the road for a series against the San Francisco Giants.

Blue Jays Alternate Wins & Losses In 4 Straight

Andres Gimenez has 63 hits with 13 doubles, a triple, 7 home runs and 34 RBIs while Ernie Clement has 96 hits with 22 doubles, 7 home runs and 29 RBIs. Kazuma Okamoto has 73 hits with 11 doubles, 19 home runs, 54 RBIs and a team-high 110 strikeouts while George Springer also has 11 doubles, 8 homers with 21 RBIs. Vladimir Guerrero Jr. has 81 hits with 13 doubles, 4 home runs and 34 RBIs as well. Jesus Sanchez also has 59 hits with 14 doubles, 7 home runs and 29 RBIs.

Seattle Mariners Recap

The Seattle Mariners come into this game looking to add on to their 1-0 win over the Angels last time out to sit at 45-43 this season. After this series, the Mariners will head on the road for a set against the Miami Marlins.

Mariners Win 3 In A Row

Luke Raley has 14 home runs and 35 RBIs this season. Cole Young’s added 82 hits with 12 doubles, a triple, 9 home runs and 41 RBIs and Cal Raleigh has 34 hits with 5 doubles, 8 home runs and 24 RBIs as well this season. Randy Arozarena has 83 hits with 20 doubles, 8 home runs and 37 RBIs as well on the year. Josh Naylor also has 81 hits with 8 home runs and 34 RBIs as well on the year. Julio Rodriguez has also added 89 hits with 15 doubles, 14 home runs and 40 RBIs.

Toronto Blue Jays @ Seattle Mariners Betting Trends: July 3, 2026

• Probable Starting Pitcher: Luis Castillo      Record this season: 3-6      ERA: 4.93
• Home Record: 1-2
• Last 5 against Blue Jays: 2-3

Why the Seattle Mariners will win

• The underdogs have won each of the Blue Jays’ last seven games at T-Mobile Park.
• The Blue Jays have lost each of their last six games as favorites against American League opponents.
• The underdogs have covered the run line in each of the Blue Jays’ last 16 games at T-Mobile Park.
• The Blue Jays have failed to cover the run line in each of their last six games against American League opponents.
• The Blue Jays have trailed after 3 innings in each of their last four games against American League opponents.
• The Blue Jays have trailed after 5 innings in each of their last four games against American League opponents.
• The Blue Jays have lost the first inning in each of their last four games against American League opponents.

• Probable Starting Pitcher: Dylan Cease      Record this season: 4-4      ERA: 3.02
• Road Record: 3-1
• Last 5 against Mariners: 0-0

Why the Toronto Blue Jays will win

• The Blue Jays have won seven of their last eight road games against the Mariners.
• The Mariners have lost five of their last six night games against AL East opponents.
• The Blue Jays have covered the run line each of their last seven night games against American League opponents that held a winning record.
• The Mariners have failed to cover the run line in each of their last eight Friday night games against AL East opponents.
• The Blue Jays have led after 3 innings in each of their last three road games against American League opponents.
• The Blue Jays have led after 5 innings in each of their last four games as road favorites.

Total Runs Facts

• Each of the last eight games between the Blue Jays and Mariners at T-Mobile Park have gone OVER the total runs line.
• Four of the Blue Jays’ last five games as road favorites have gone UNDER the total runs line.
• There has been at least one run scored in the first inning in each of the Blue Jays’ last nine games as favorites.
• There has been no run scored during the first inning in 12 of the Mariners’ last 13 games as home underdogs.

Seattle Mariners Player Prop Facts

• Luke Raley has hit a home run in each of his last two appearances with his team as a home underdog against the Blue Jays.
• Luis Castillo has recorded six or more strikeouts in four of his five previous appearances with his team as a home underdog against AL East opponents.
• Josh Naylor has recorded at least one hit in each of his last 10 Friday appearances against teams that held a losing record.
• Randy Arozarena ranks T9th in the league in Steals (19) this season.

Toronto Blue Jays Player Prop Facts

• Vladimir Guerrero Jr. has hit a home run in three of the Blue Jays’ last four night games against AL West opponents that held a winning record.
• Dylan Cease has recorded a win in each of his last three appearances with the Blue Jays as road favorites.
• Dylan Cease has recorded nine or more strikeouts in four of his last five appearances in night games against AL teams that held a winning record.
• Nathan Lukes has recorded at least one hit in each of his last 10 appearances in night games against teams that held a winning record.
• Dylan Cease ranks 3rd in the league for total Strikeouts (128) this season.

Matchup/League Facts

• The Mariners rank 1st in the league for walks allowed this season (222).
• The Mariners rank T1st in the league for home runs allowed this season (80).
• The Blue Jays rank 30th in the league for triples this season (5).
• The Blue Jays rank 29th in the league for walks this season (242).

Toronto Blue Jays vs. Seattle Mariners Prediction

I’m on the Blue Jays here. Seattle’s in a nice little run, but the reality is that this Mariners team can run hot or cold and Dylan Cease is the far more reliable starting pitching option in this game. I think that Toronto takes care of business in this one behind their ace and I think Toronto gets the win. Give me the Blue Jays.