Toronto Blue Jays vs Seattle Mariners Prediction 7/3/2026 Today’s MLB Picks

The Toronto Blue Jays and Seattle Mariners meet Friday in MLB action at T-Mobile Park. Here’s a Toronto Blue Jays vs Seattle Mariners Prediction. This article will include a Toronto Blue Jays vs Seattle Mariners Pick.

Toronto Blue Jays Betting Preview

The Toronto Blue Jays are 41-46 on the year and play the Giants and Padres next. The Toronto Blue Jays are batting .248 on the season and have a .310 OBP and a .390 slugging percentage. The Toronto Blue Jays’ pitching staff has a 4.08 ERA and a 1.31 WHIP. Ernie Clement leads the Toronto Blue Jays with 96 hits and 29 RBI, while Kazuma Okamoto and Vladimir Guerrero Jr. have combined for 154 hits and 88 RBI.

Dylan Cease gets the ball for the Toronto Blue Jays, and he is 4-4 with a 3.02 ERA and 128 strikeouts this season. Cease is 0-0 with a 4.82 ERA and 10 strikeouts in his career against the Seattle Mariners.

Seattle Mariners Betting Preview

The Seattle Mariners are 45-43 on the year and play the Rays and Marlins next. The Seattle Mariners are batting. 232 on the season, have a .313 OBP, and have a .381 slugging percentage. The Seattle Mariners’ pitching staff has a 3.65 ERA and a 1.18 WHIP. Julio Rodriguez leads the Seattle Mariners with 89 hits and 40 RBI, while Cole Young and Randy Arozarena have combined for 165 hits and 78 RBI.

Luis Castillo gets the ball for the Seattle Mariners, and he is 3-6 with a 4.93 ERA and 73 strikeouts this season. Castillo is 2-3 with a 4.68 ERA and 31 strikeouts in his career against the Toronto Blue Jays.

Why the Seattle Mariners will win

• The underdogs have won each of the last seven games between the Blue Jays and Mariners at T-Mobile Park.
• The Blue Jays have lost each of their last six games as favorites against AL West opponents.
• The underdogs have covered the run line in each of the last 16 games between the Blue Jays and Mariners at T-Mobile Park.
• The Blue Jays have failed to cover the run line in each of their last six games as favorites against American League opponents.
• The Mariners have led after 3 innings in four of their last five games as underdogs against American League opponents.

Why the Toronto Blue Jays will win

• The Blue Jays have won seven of their last eight games at T-Mobile Park.
• The Mariners have lost four of their last five home games against the Blue Jays following a win.
• The Mariners have failed to cover the run line in nine of their last 10 games following a win.
• The road team has covered the run line in eight of the Blue Jays’ last nine games.
• The Mariners have trailed after 5 innings in four of their last five night games at T-Mobile Park against AL East opponents.

Total Runs Facts

• Six of the Mariners’ last seven games as home underdogs have gone UNDER the total runs line.
• Each of the Blue Jays’ last three road games against American League opponents has 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 eight games against American League opponents.
• There has been no run scored during the first inning in 11 of the Mariners’ last 12 games as home underdogs against American League opponents.

Seattle Mariners Player Prop Facts

• Dominic Canzone has hit a home run in each of his last two home appearances after playing the previous day.
• Luis Castillo has recorded six or more strikeouts in three of his last four appearances with the Mariners as home underdogs against AL East opponents.
• Josh Naylor has recorded at least one hit in each of his last 10 Friday appearances against AL teams that held a losing record.

Toronto Blue Jays Player Prop Facts

• Vladimir Guerrero Jr. has hit a home run in three of the Blue Jays’ last five games against the Mariners.
• Dylan Cease has recorded a win in each of his last three appearances with the Blue Jays as road favorites against AL opponents.
• Dylan Cease has recorded eight or more strikeouts in seven of his last eight appearances.
• Vladimir Guerrero Jr. has recorded at least one hit in each of the Blue Jays’ last nine games as road favorites against the Mariners.
• Ernie Clement ranks 6th in the league in Hits (96) this season.

Matchup/League Facts

• The Mariners rank 29th in the league for doubles this season (107).
• The Mariners are one of only three teams in the league to rank top 10 in both strikeouts and walks allowed this season.
• The Blue Jays rank 4th in the league for strikeouts this season (648).
• The Blue Jays rank 26th in the league for steals this season (36).

Toronto Blue Jays vs Seattle Mariners Prediction

The Blue Jays are going to be favored with Cease on the mound, but the value is with the Mariners and the plus money. The Mariners are putting together a strong week, and we know what this team is capable of when clicking. The Mariners were a popular World Series pick before the season. Castillo has struggled throughout the season, but he’s coming off a month of June where he allowed 20 hits and 8 earned runs in 21.1 innings. Castillo has allowed 9 earned runs in his last 30.1 innings. Castillo looks like he’s found his footing. Give me the plus money with the Mariners at home.

Randy Chambers's Pick: Seattle Mariners