The Seattle Mariners visit the Toronto Blue Jays on Saturday afternoon at Rogers Centre, one day after Toronto rolled to an 8-1 win in the series opener. Toronto sits at -128 on the moneyline, Seattle at +107, and the total is 7.5. The pitching matchup explains why those numbers are so tight. Blue Jays right-hander José Soriano has been uneven since arriving in Toronto. Seattle counters with rookie Kade Anderson, making the second start of his career. Both of our plays come out of one question: how many innings do these starters cover?
Last Updated: Saturday, August 29, 2026
Seattle Mariners vs. Toronto Blue Jays — Time & How to Watch
| Where | Rogers Centre, Toronto, Ontario |
| When | Saturday, August 29 — 3:07 p.m. ET |
| TV | Sportsnet, Mariners.TV, TVA Sports |
Seattle Mariners vs. Toronto Blue Jays Betting Preview
Soriano owns a 3.43 ERA and a 1.29 WHIP over 26 starts, with 143 strikeouts and 65 walks in 144.1 innings. That headline flatters him at the moment. In four starts since joining Toronto he has a 4.22 ERA and a 1.50 WHIP over 21.1 innings. Last time out he allowed five earned runs on seven hits in five innings against the Yankees. He has not finished six innings in any of the four. A walk rate above four per nine drives his pitch count up early.
Anderson is the larger unknown. The rookie debuted on August 22 against the Cubs, allowing three earned runs on five hits over 5.2 innings with two walks and five strikeouts. Two of those hits left the yard. The stuff played. However, this is start number two, and the second look is where the sample is thinnest. His start is confirmed on MLB.com’s probable pitchers page.
The standings cut differently for each side. Seattle is 64-70 and third in the AL West, three back of Houston. Toronto is 65-70 and fifth in the AL East, 15 out of first but 3.5 back in the wild card race. Friday belonged to the Blue Jays. Dylan Cease struck out eight over six innings and Toronto hit three homers. Neither bullpen was stretched in the blowout.
Seattle Mariners vs. Toronto Blue Jays Odds
| Run Line | Moneyline | Total | |
|---|---|---|---|
| Mariners | +1.5 (-220) | +107 | U 7.5 (-110) |
| Blue Jays | -1.5 (+180) | -128 | O 7.5 (-110) |
Odds accurate as of Saturday, August 29, 2026 via TheSpread.com. Odds change, get the latest MLB Odds – Futures – Props
Seattle Mariners vs. Toronto Blue Jays — Who Is the Public Betting?
| Mariners | 32% | 68% | Blue Jays |
See the latest MLB Public Betting Splits and make smarter wagers!
Mariners vs. Blue Jays Prediction — Will Under Cash?
Start with the run environment rather than the side. The number opened at 7.5 and has not moved, but the juice did. The over opened at -115 and now sits at -110. The under went from -105 to -110. That is a nudge, not a stampede. Still, it is money landing on one side of a total that already looked low.
Seattle’s bat supports that read. The Mariners hit .228 as a team with a .309 on-base percentage, and they scored once on Friday. On-base ability drives multi-run innings, and this lineup does not generate much of it. Toronto’s bullpen also enters fresh. Mason Fluharty, Paul Sewald and CJ Van Eyk each threw one inning in the opener.
The case against is real. Soriano’s walk rate invites early traffic and Toronto just posted eight runs. Anderson allowed two long balls in his debut. If both starters are gone by the fifth, middle relief decides this game, and that is when 7.5 looks small. This is a lean built on lineup profiles and a modest market nudge.
The Pick: Under 7.5 (-110)
Mariners vs. Blue Jays Prediction — Why Will Price Not Move?
The market read carries this one. Sixty-eight percent of run line tickets sit on Toronto, and the moneyline split is more lopsided at 79 percent. Yet the price has not moved a cent. Toronto was -128 at the open and Toronto is -128 now. A heavy public side that cannot drag the price with it is the classic line freeze, which often signals quiet resistance the other way. The caveat is timing. This number has only been posted a matter of hours.
The baseball case for Seattle is thinner than the market case, and it deserves to be treated that way. A rookie making his second start is the least predictable input on the board. Toronto is also coming off its best offensive game of the series. In contrast, +107 on a road team is close to a coin-flip price. The season records are separated by one game. This play rests on the same low-scoring projection as the first.
The Pick: Mariners Moneyline (+107)
Final Thoughts and Bonus Angle
The swing moment arrives in the fifth and sixth innings. If Anderson is still on the mound and under 85 pitches, Seattle is in decent shape. If he leaves with runners on, the game turns over to a Mariners relief group that has not protected many leads lately. Meanwhile, watch Soriano’s first-inning pitch count. He has not completed six innings in any Toronto start. Toronto scored five of its eight runs in the first inning on Friday. Both plays assume a slower, tighter game than that. For more on how this series set up, see our Friday preview of the series opener.
Recap of the plays: Under 7.5 (-110) and Mariners Moneyline (+107).
MLB Mariners vs. Blue Jays FAQ: Saturday August 29, 2026
What time does the Mariners vs. Blue Jays game start?
First pitch is set for 3:07 p.m. ET on Saturday, August 29, 2026, at Rogers Centre. This is the middle game of a three-game weekend series and an afternoon start rather than the usual evening window, per the Baseball Reference game preview.
What channel is the Mariners vs. Blue Jays game on?
The game airs on Sportsnet in Canada, on Mariners.TV in the Seattle market, and on TVA Sports for French-language coverage. There is no national United States television window for this matchup, so viewers outside those markets should check their regional listings before first pitch.
Who is pitching for the Blue Jays today?
Right-hander José Soriano starts for Toronto. He is 10-7 with a 3.43 ERA and a 1.29 WHIP across 26 starts this season, with 143 strikeouts in 144.1 innings. His most recent outing came on August 23 against the Yankees, when he allowed five earned runs over five innings.
Where are the Mariners and Blue Jays playing today?
The game is at Rogers Centre in Toronto, Ontario, the home ballpark of the Blue Jays. Seattle is the road team for all three games this weekend. The two clubs also met in Seattle in early July before this Toronto set.
Who won the last meeting between the Mariners and Blue Jays?
Toronto won the last meeting 8-1 on Friday, August 28, 2026, at Rogers Centre. Dylan Cease struck out eight over six innings for the Blue Jays, George Springer went 4-for-4 with a home run, and Toronto hit three homers in total. Dominic Canzone homered for Seattle’s only run, per the MLB.com game wrap.