Toronto Blue Jays vs Seattle Mariners Game 4 Odds

The upcoming showdown on October 16, 2025, between the Toronto Blue Jays and Seattle Mariners at T-Mobile Park in Seattle, WA marks Game 4 of the 2025 MLB American League Championship Series. With the Mariners leading the series 2-1, both teams will look to secure a pivotal win on fox sports 1.

Current odds favor the Mariners at -135 on the Moneyline, down from an opening -140, while the Blue Jays sit at +115, improved from +130, indicating early wagering confidence. In the run line market, Seattle opened at -1½ +145 but has shifted to -1½ +158, whereas Toronto’s +1½ moved from +1½ -175 to +1½ -190, giving underdog backers sharper value. Totals markets are set at 7½ runs, with the over at -115 and the under at -105.

These movements highlight market sentiment around Seattle’s potent bullpen and Toronto’s streaky offense. Access MLB odds to compare more markets and monitor line shifts. The best moneyline odds today for the Mariners are -135 at Caesars, while Toronto offers +115 at Caesars.

Our best bet leans toward Seattle on the Moneyline at -135, capitalizing on home-field momentum and bullpen dominance. Ready to bet smarter? Start your OddsTrader Turbo subscription now to gain an edge or place your wager with a U.S. regulated sportsbook.