Toronto Blue Jays vs Seattle Mariners Odds Today

The highly anticipated MLB postseason clash between the Toronto Blue Jays and Seattle Mariners is set for October 17, 2025, at T-Mobile Park in Seattle, WA. With the series tied 2-2 heading into Game 5, the Blue Jays face a raucous home crowd in the retractable-dome stadium. The matchup airs on fox sports 1, and bettors can explore all the latest betting markets on our MLB odds page or place a wager with a U.S. regulated sportsbook.

Current betting lines for this showdown reflect a tight contest, with market sentiment seeing both teams evenly matched:

• Moneyline: Seattle Mariners at -110, Toronto Blue Jays at -110
• Run Line: Seattle +1½ -190, Toronto -1½ +158
• Total Markets: Over 7 (o7 -110)

The moneyline opened at -110 for both teams and remains unchanged, reflecting bettors’ confidence in an even matchup. The run line opened at +1½ -190 for Seattle and -1½ +158 for Toronto and has held steady, while the total opened at 7 runs and remains at o7 -110. Stable lines provide clearer edge identification.

Seattle’s ability to score at home—averaging 5.1 runs per game at T-Mobile Park—versus Toronto’s road pitching staff posting a 3.75 ERA highlights the value of the underdog Mariners on the run line. Harnessing these insights allows bettors to make smarter decisions by focusing on venue-driven performance.

Given the balanced moneyline and home hitting advantage, backing the Seattle Mariners on the run line at +1½ -190 stands out as the best play. You can grab these odds at Caesars. Ready to bet smarter? Start your OddsTrader Turbo subscription now and profit off the edge.