The Toronto Blue Jays host the Seattle Mariners looking to win a series and stay alive in the Wild Card race as -125 favorites at BET99. Can they keep their momentum after a huge 8-1 win on Friday?
It's Jose Soriano bump day, so we'll be rocking with Toronto as part of my Mariners vs. Blue Jays predictions.
Let’s dive into my MLB picks for Saturday, Aug. 29, and build our bankroll this weekend.
Mariners vs Blue Jays predictions
Mariners vs Blue Jays best bet: Blue Jays moneyline (-125)
Coming off a game where the Toronto Blue Jays had one of the best offensive outings of their season, I'm riding that momentum into Game 2 with their No. 2 on the mound.
Jose Soriano comes into this one off his worst start of the season against the New York Yankees, but is in a prime bounce-back spot against a team that owns just a .252 xBA across 117 plate appearances. He's limited Josh Naylor, Cal Raleigh, and Dominic Canzone to a combined 6-for-38 mark — that'll play.
I'd bet this up to -140.

Mariners vs Blue Jays same-game parlay (SGP)
George Springer is the hottest hitter in the Blue Jays' lineup, with an OPS of .825 in August while recording seven hits in his last three games. Elsewhere, Soriano absolutely diced this Mariners lineup last time out in June, recording nine strikeouts, which should be enough to get Toronto the win when the dust settles.
Mariners vs Blue Jays SGP
- Blue Jays moneyline
- Jose Soriano 6+ strikeouts
- George Springer 2+ H/R/RBI
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Mariners vs Blue Jays home run pick: Vladimir Guerrero Jr. (+525)
What better time than to hit your first homer at home than against a rookie? It's time for Vladdy.
His bat path and swing look similar to what we saw last year in the playoffs, and he's slowly (very slowly) regaining his confidence at the plate. It might be the perfect storm tonight.
- Best bets: 7-9, +0.17 units
- SGPs: 2-14, -1.9 units
- HR picks: 1-13, -2.20 units
Mariners vs Blue Jays odds
- Moneyline: Seattle +105 | Toronto -125
- Run line: Seattle +1.5 (-190) | Toronto -1.5 (+160)
- Over/Under: Over 7.5 (-115) | Under 7.5 (-105)
Mariners vs Blue Jays trend
The Blue Jays are 5-0 in their last five games as a favorite. Find more MLB betting trends for Mariners vs. Blue Jays.
How to watch Mariners vs Blue Jays and game info
| Location | Rogers Centre, Toronto, ON |
| Date | Saturday, August 29, 2026 |
| First pitch | 3:07 p.m. ET |
| TV | Mariners.TV, SN |
| Mariners starting pitcher | Kade Anderson (0-0, 4.77 ERA) |
| Blue Jays starting pitcher | Jose Soriano (10-7, 3.43 ERA) |
Mariners vs Blue Jays latest injuries
Mariners vs Blue Jays weather
Odds are correct at the time of publishing and are subject to change.
Not intended for use in MA.
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