Polymarket's full Tuesday, September 1 MLB slate covers all 15 games on the board, each with its own moneyline, spread, and total contracts.
We went matchup by matchup to find the best MLB odds available and picked one favorite side per game.
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Best MLB Odds on Polymarket: How Today's Contracts Are Priced
Every Polymarket contract trades between 1¢ and 99¢, and that price doubles as the market's implied probability of that outcome happening.
A winning contract settles at $1 and a losing one settles at $0, so the price you pay is the real risk on the trade.
1. Mets vs Rays Prediction: Over 7.5
We like the total more than either side of the moneyline here. Tampa Bay's -1.5 line is priced at just 37¢, telling us the market doesn't trust a big margin, and with two lineups this inconsistent on the run column, we think 7.5 is a light number to clear.
- Moneyline: Mets 46¢, Rays 55¢.
- Spread: Mets +1.5 64¢, Rays -1.5 37¢.
- Total: Over 7.5 51¢, Under 7.5 50¢.
Our best pick: Over 7.5 at 51¢. We expect enough offense from both sides to push this past 8 runs, and the modest price still leaves value on the number.
2. Giants vs Pirates Prediction: Pirates Moneyline
Pittsburgh's 61¢ moneyline price is the standout number on this board, well ahead of its own -1.5 spread at 42¢. That gap tells us the market expects a Pirates win but isn't confident it comes by more than a run or two, which matches our read that this is a straightforward edge, not a blowout.
- Moneyline: Giants 40¢, Pirates 61¢.
- Spread: Giants +1.5 59¢, Pirates -1.5 42¢.
- Total: Over 7.5 51¢, Under 7.5 50¢.
Our best pick: Pirates moneyline at 61¢. We think Pittsburgh wins this one comfortably enough to cash the moneyline without needing extra run support to cover a spread.
3. Padres vs Reds Prediction: Padres -1.5
San Diego's -1.5 line is priced at 45¢, not far off its flat 56¢ moneyline number, and that tight gap is exactly why we like the spread here instead of just backing the Padres to win outright. We think this is a game San Diego controls from the start rather than a nail-biter.
- Moneyline: Padres 56¢, Reds 45¢.
- Spread: Padres -1.5 45¢, Reds +1.5 56¢.
- Total: Over 9.5 48¢, Under 9.5 53¢.
Our best pick: Padres -1.5 at 45¢. We're comfortable with San Diego covering by two or more, and the price still leaves solid value relative to the moneyline number.
4. Blue Jays vs Guardians Prediction: Blue Jays +1.5
Cleveland is favored at 63¢ on the moneyline, but Toronto's +1.5 spread still trades at 57¢, and that's the number we want. We think the Blue Jays keep this competitive even if they don't pull off the outright upset.
- Moneyline: Blue Jays 38¢, Guardians 63¢.
- Spread: Blue Jays +1.5 57¢, Guardians -1.5 44¢.
- Total: Over 7.5 53¢, Under 7.5 48¢.
Our best pick: Blue Jays +1.5 at 57¢. We like Toronto to hang around all game, which makes the run line a safer, better-priced way to play this matchup than the moneyline underdog.
5. Mariners vs Red Sox Prediction: Red Sox Moneyline
Boston's 53¢ moneyline price stands out next to Seattle's -1.5 spread at just 35¢, and that split lines up with how we see this game playing out: a Red Sox win, but not necessarily by multiple runs. The heaviest trading volume on today's slate is on this game, and we're on the same side the market has landed on.
- Moneyline: Mariners 48¢, Red Sox 53¢.
- Spread: Mariners -1.5 35¢, Red Sox +1.5 67¢.
- Total: Over 7.5 46¢, Under 7.5 55¢.
Our best pick: Red Sox moneyline at 53¢. We think Boston finds a way to win this one straight up, and we'd rather take the cleaner moneyline price than lean on a multi-run margin.
6. Braves vs Nationals Prediction: Braves -1.5
Atlanta's -1.5 spread is priced at 51¢, close to a coin flip even with the Braves sitting at 62¢ on the flat moneyline. We think that gap undersells how much better Atlanta is here, and we like the extra value on the run line over just taking the moneyline favorite.
- Moneyline: Braves 62¢, Nationals 39¢.
- Spread: Braves -1.5 51¢, Nationals +1.5 50¢.
- Total: Over 9.5 52¢, Under 9.5 49¢.
Our best pick: Braves -1.5 at 51¢. We expect Atlanta to win by more than a single run tonight, which makes this the better side of the number even with a modest price.
7. Tigers vs Twins Prediction: Under 8.5
This is one of the tightest boards of the night, with Detroit and Minnesota separated by a single cent on the moneyline. With neither offense standing out and both bullpens keeping games close all year, we think the total is the more predictable market to play than picking a side.
- Moneyline: Tigers 50¢, Twins 51¢.
- Spread: Tigers -1.5 38¢, Twins +1.5 63¢.
- Total: Over 8.5 52¢, Under 8.5 49¢.
Our best pick: Under 8.5 at 49¢. We expect a low-scoring, close game between two evenly matched clubs, and the price on the under still gives us room for error.
8. Brewers vs Cubs Prediction: Over 9.5
Milwaukee's +1.5 spread trades at 63¢ against a below-even 47¢ moneyline, which tells us the market expects a competitive, back-and-forth game even with the Cubs favored to win outright. Games that stay close like this tend to have extra scoring, which is where our lean comes from.
- Moneyline: Brewers 47¢, Cubs 54¢.
- Spread: Brewers +1.5 63¢, Cubs -1.5 38¢.
- Total: Over 9.5 54¢, Under 9.5 47¢.
Our best pick: Over 9.5 at 54¢. We think both lineups find enough offense to push this past the total, and it's the top-priced pick on tonight's board for a reason.
9. Marlins vs Royals Prediction: Royals +1.5
Kansas City's +1.5 spread is priced at 63¢ even though Miami is only a 49¢ favorite on the moneyline, and that combination is exactly what we want to see before backing an underdog on the run line. We think this stays a one-run game either way.
- Moneyline: Marlins 49¢, Royals 52¢.
- Spread: Marlins -1.5 38¢, Royals +1.5 63¢.
- Total: Over 9.5 53¢, Under 9.5 48¢.
Our best pick: Royals +1.5 at 63¢. We like Kansas City to keep this within a run or two regardless of who ultimately wins, and the price reflects real confidence, not just a hedge.
10. Athletics vs Rangers Prediction: Over 7.5
Texas is a heavy 67¢ moneyline favorite over Oakland, but we're more interested in the total, which sits at a tighter 49¢/52¢ split. A lopsided pitching matchup like this one tends to produce extra runs on the winning side, which is where our lean comes from.
- Moneyline: Athletics 34¢, Rangers 67¢.
- Spread: Athletics +1.5 54¢, Rangers -1.5 47¢.
- Total: Over 7.5 49¢, Under 7.5 52¢.
Our best pick: Over 7.5 at 49¢. We expect Texas to pull away in this one, and a blowout is usually good news for the over.
11. White Sox vs Astros Prediction: White Sox Moneyline
This one is priced almost dead even across the board, with Chicago at 50¢ and Houston at 51¢ on the moneyline. In a true coin-flip spot like this, we lean toward the side getting the fractional edge in price, and that's Chicago.
- Moneyline: White Sox 50¢, Astros 51¢.
- Spread: White Sox -1.5 39¢, Astros +1.5 62¢.
- Total: Over 8.5 52¢, Under 8.5 49¢.
Our best pick: White Sox moneyline at 50¢. We think Chicago sneaks out a close win here, and even-money value is still value when we believe the coin lands our way.
12. Orioles vs Rockies Prediction: Rockies +1.5
Baltimore is favored at 58¢ on the moneyline, yet Colorado's +1.5 spread still trades at 53¢, better than a coin flip on staying within two runs. We think the Rockies have enough in this lineup to keep it a one or two-run game even on the road.
- Moneyline: Orioles 58¢, Rockies 43¢.
- Spread: Orioles -1.5 48¢, Rockies +1.5 53¢.
- Total: Over 11.5 47¢, Under 11.5 54¢.
Our best pick: Rockies +1.5 at 53¢. We're backing Colorado to cover behind an Orioles win, not to pull off the outright upset.
13. Yankees vs Angels Prediction: Yankees -1.5
New York's moneyline price of 64¢ is well clear of the field, and its -1.5 spread still holds up at 51¢. That's a rare combination, and it matches how we see this game: the Yankees winning and covering in the same night.
- Moneyline: Yankees 64¢, Angels 37¢.
- Spread: Yankees -1.5 51¢, Angels +1.5 50¢.
- Total: Over 7.5 49¢, Under 7.5 52¢.
Our best pick: Yankees -1.5 at 51¢. We think this lineup mismatch shows up on the scoreboard, not just in the win column, and New York covers comfortably.
14. Phillies vs Diamondbacks Prediction: Phillies Moneyline
Philadelphia sits at 55¢ on the moneyline against a 46¢ Arizona number, with the total split evenly at 50¢/50¢. The moneyline is the one market with real separation in this game, and it's the side we're most confident in as well.
- Moneyline: Phillies 55¢, Diamondbacks 46¢.
- Spread: Phillies -1.5 42¢, Diamondbacks +1.5 59¢.
- Total: Over 7.5 50¢, Under 7.5 50¢.
Our best pick: Phillies moneyline at 55¢. We like Philadelphia to take care of business here, and the moneyline is the cleanest way to back that opinion.
15. Dodgers vs Cardinals Prediction: Dodgers Moneyline
Our Dodgers vs Cardinals prediction centers on the moneyline, where Los Angeles is priced at 64¢, the second-highest single-side number on the entire slate behind only Texas.
St. Louis's +1.5 spread trades at 56¢, but we still think the Dodgers are the stronger team on paper tonight, moneyline or spread.
- Moneyline: Cardinals 37¢, Dodgers 64¢.
- Spread: Cardinals +1.5 56¢, Dodgers -1.5 45¢.
- Total: Over 8.5 54¢, Under 8.5 47¢.
Our best pick: Dodgers moneyline at 64¢. We're confident Los Angeles takes this one outright, and it's our highest-conviction pick to close out the slate.
Every one of today's 15 MLB games is trading live on Polymarket right now, and prices shift as new volume comes in, so check the current board before locking in a position.
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Best MLB Bets Today: Final Thoughts
Across all 15 games, the moneyline gave the clearest signal in the Pirates, Yankees, and Dodgers games, each pricing a favorite above 60¢.
The spread and total markets, on the other hand, stayed tighter almost everywhere, which is where a lot of the value on today's best MLB odds actually lives.
For more prediction market coverage across every sport, check out the full prediction markets hub, browse the available prediction market apps, or see every current promo code before you sign up.
Best MLB Odds FAQs
What is the current Polymarket promo code?
The current Polymarket promo code is ACTION, which unlocks a $50 trading bonus for new users who deposit $10.
What are the best MLB bets today on Polymarket?
Our top picks include the Pirates moneyline, the Yankees -1.5 spread, and the Dodgers moneyline, each priced above 60¢ on the board.
What is Action Network's Dodgers vs Cardinals prediction today?
Our Dodgers vs Cardinals prediction favors the Dodgers on the moneyline at 64¢, implying a 64% win probability against St. Louis.
Which MLB moneyline is most favored today?
The New York Yankees carry the highest moneyline price on the slate at 64¢, tied with the Los Angeles Dodgers.
How do Polymarket moneyline, spread, and total contracts work?
Each contract trades between 1¢ and 99¢ based on implied probability, and it settles at $1 if the outcome hits or $0 if it doesn't.
How many MLB games are covered in today's best MLB odds roundup?
This roundup covers all 15 games on today's full MLB slate, from the early 6:40 PM starts through the late West Coast games.
Do Polymarket prices change before first pitch?
Yes, every price above reflects the board at the time this article was published, and contracts continue trading up until each game's resolution window closes.
