2 Best MLB Bets and Player Props for Game 4 of the ALCS: Blue Jays at Mariners

The MLB postseason is heating up.

Even within a single MLB game, you've got countless betting markets to choose from.

Which bets stand out today as the Toronto Blue Jays face the Seattle Mariners.

We're going to run through my favorites in FanDuel Sportsbook's MLB betting odds. You can also check out FanDuel Research's MLB player projections if you want a glimpse at projected strikeouts, home runs, and more.

Now, let's dig into the best bets for this game.

Betting Picks for Blue Jays at Mariners ALCS Game 4

Mariners Moneyline (-126)

Game 3 was all Jays. I see the Mariners bouncing back today.

Toronto's offense flexed its muscles last night, beating up on George Kirby. Tonight, Seattle is giving the ball to Luis Castillo, and his dominance versus right-handed hitters should come in handy against George Springer and Vladimir Guerrero Jr.. In the regular season, Castillo held righties to a .255 wOBA with a 25.2% K rate in the split. He was also lights out at home, with hitters recording a mere .258 wOBA against him in Seattle.

Max Scherzer is going for Toronto. Left off the roster for the Divisional Round, Scherzer seems to be running on fumes at this point in his career, and he struggled to a 4.26 SIERA in the regular season. He gave up a 54.2% fly-ball rate and 2.01 dingers per nine.

With Seattle holding the pitching advantage, the Mariners are the side I'm backing in Game 4.

Josh Naylor to Record an RBI (+190)

I'm going back to Josh Naylor again. Naylor didn't come through last night in this market, but this shapes up as an even better spot for him.

Scherzer had a 5.14 xFIP against lefties this year while surrendering 2.45 homers per nine and a .352 wOBA in the split. Yes, please.

With the platoon advantage, Naylor put up a .361 wOBA and 38.2% hard-hit rate. He's not too bad against lefties, either, posting a .328 wOBA versus southpaws -- so he can hold his own if he finds himself in a lefty-lefty matchup against the Jays' bullpen.

Slotted right behind Cal Raleigh, Julio Rodriguez and Jorge Polanco, Naylor is in a nice spot in the lineup for RBI chances.

You can also download our free 2025 MLB playoffs printable bracket to follow along all postseason.

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Which bets stand out to you today? Check out FanDuel Sportsbook's MLB betting odds to see the full menu of options.

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The above author is a FanDuel employee and is not eligible to compete in public daily fantasy contests or place sports betting wagers on FanDuel. The advice provided by the author does not necessarily represent the views of FanDuel. Taking the author's advice will not guarantee a successful outcome. You should use your own judgment when participating in daily fantasy contests or placing sports wagers.