World Series Odds, Predictions and Picks 2025: Mariners Make Big Moves in Odds

• The Mariners shifted from 14/1 to 10/1 to win the World Series 

• The Dodgers are World Series favorites at +260

• The Mets have been the worst team in baseball over the past week 

The Seattle Mariners decided to pursue top talent at the deadline, and it has resulted in consistent winning over the past week. Seattle shifted from 14/1 to 10/1 to win the World Series, and they’re currently third on the odds board. 

The top contenders have shifted consistently in the past week, so there is a lot of new things to breakdown in baseball. We have you covered with our updated World Series analysis.

World Series 2025 Winner Odds

Odds taken from Hard Rock Bet. Head over to Hard Rock Bet to sign up for a new account and claim the following welcome bonus: Bet $5, Get $150 in Bonus Bets.

Rest of the league listed at +100000 odds.

World Series Predictions

The Seattle Mariners were the biggest movers of the 2025 trade deadline. They added Josh Naylor and Eugenio Suarez to an already talented lineup.

The Mariners are currently second in the American League West standings to the Houston Astros. However, they’re a much better team on paper than Houston and they would likely be in first if they had their current roster since Opening Day. 

Seattle is in sole possession of the top Wild Card spot in the American League. They’re only 0.5 games out of first place in the division, and this gap could be conquered by the end of the week. 

The Mariners pitching is deep and they have powerful bats all over the order. This combination is what it takes to win the World Series, so don’t pass on Seattle for their current price of +1000.

The Milwaukee Brewers and Houston Astros are two of the other risers in the World Series odds this week. The Brewers have been one of the best teams in the National League over the past month, and Houston’s playoff experience is valuable to bettors at this point in the season. 

While these teams are rising, the New York Mets are on the verge of falling off a cliff. As of August 11th, the team has lost 11 of their past 12 games. 

New York’s playoff odds have also decreased by 25%. Juan Soto’s signing was supposed to diminish the chances of a losing streak that the Mets are currently dealing with, but even the generational talent can’t save the team. 

The top two teams in our mind currently are the clubs leading the odds. The Los Angeles Dodgers and Philadelphia Phillies have been consistent thorns in the side of the rest of the league, and this year should be no different. 

Both teams seem to be getting stronger as we approach the final six weeks of the regular season.

Bet $5 at Hard Rock Bet and Claim $150 in Bonus Bets

World Series Winner - My Pick

Philadelphia Phillies (+650) at FanDuel

The Phillies are the team to beat now that they have cleared out the Mets in the NL East. The two teams were in a competitive division race, but this is no longer the case. 

Philadelphia has their eyes set on the Los Angeles Dodgers, which should help their focus in the final portion of the regular season.

Wager $5 at Hard Rock and Claim $150 in Bonus Bets

How to Bet on the World Series

Betting on the World Series can be difficult because the MLB season is so long. If a team looks good in the summer, it could become meaningless when the playoffs arrive in the fall. 

Focusing on the top teams in the odds for World Series betting is essential. Generally, the big market teams that spend the most money tend to win the Fall Classic. 

The Dodgers are the favorites because they have the best team. They became the best team by spending the most money on players. World Series odds constantly change, so focus on the teams at the top of the board. 

Sportsbooks have World Series odds under their respective MLB futures section. The earlier you place World Series bets, the better the odds you’ll receive. 

How to Read MLB World Series Odds

Understanding the American odds is needed to bet on the World Series market. 

If the odds show a minus (–), then that amount of money must be wagered to win $100. (e.g., 150 means you must bet $150 to win $100).

If the odds show a plus (+), you will earn that money on a successful $100 bet. (e.g. +150 means you make $150 on a $100 wager.)

If you bet $100 on the Dodgers to win the World Series on Caesars Sportsbook (+210), you would win $320 if they were successful. 

Where to Bet on the MLB World Series

Caesars Sportsbook is one of our favorite places to bet on the World Series, especially with their current welcome offer: Bet $1, Get 10 100% Profit Boost Tokens. Just don't forget to use our promo code WSNDYW.

However, most legal sports betting states have multiple operators in the state. 

FanDuel Sportsbook is America’s #1 Sportsbook and an official betting partner of MLB. FanDuel has an easy-to-use interface and plenty of MLB props, so we use it daily during the season. On FanDuel, you can claim the following welcome offer: Bet $5, Get $300 in Bonus Bets if Your Bet Wins. No promo code is needed.

BetMGM Sportsbook is also an industry leader and a great MLB betting platform. BetMGM is excellent for big baseball bettors, and it shows in their welcome bonus: Get Up to $1,500 in Bonus Bets*. Use our promo code WSNSPORTS when signing up for your profile to claim this offer. 

*Bonus Bets Expire in 7 Days. One New Customer Offer Only. Add’l terms.

World Series Winner History

The Boston Americans won the first World Series in 1903 over the Pittsburgh Pirates. The Americans later became known as the Red Sox. 

The World Series has changed significantly, but the modern format was established in 1967. It features the winner of the American and National Leagues in a seven-game series. 

The Yankees have won the most World Series with 27. The Cardinals are second with 11, and the Red Sox and Athletics are tied for third with nine.