Exchange vs Sportsbook

World Series Odds: Polymarket vs BetMGM, BetRivers, DraftKings, FanDuel

30 World Series entrants currently have a live price on both a prediction-market exchange and a real sportsbook. The widest gap right now is Los Angeles Dodgers, priced at 34.5% on Polymarket versus an average of 39.0% across sportsbooks — a +4.5pt gap on the identical event.

30 entrants compared
5 venues
Source market MLB World Series Champion 2026

Where is the World Series priced differently?

Every row below has a real, live quote from at least one exchange and one sportsbook — no placeholder or zero-probability rows. Best marks the single highest-payout price per entrant; Edge flags a gap of 3+ percentage points between what the exchange and sportsbooks believe.

Entrant Polymarket BetMGM BetRivers DraftKings FanDuel Edge
Los Angeles Dodgers
Best 34.5% +190
38.5% +160
39.2% +155
38.5% +160
40.0% +150
+4.5pt
New York Yankees
Best 10.5% +852
11.8% +750
15.4% +550
11.8% +750
11.8% +750
+2.2pt
Milwaukee Brewers
8.5% +1083
9.1% +1000
11.1% +800
Best 8.3% +1100
9.1% +1000
+1.0pt
Tampa Bay Rays
7.8% +1182
8.3% +1100
10.0% +900
9.1% +1000
Best 7.7% +1200
+1.0pt
Atlanta Braves
Best 7.2% +1279
8.3% +1100
10.0% +900
9.5% +950
8.3% +1100
+1.8pt
Chicago Cubs
Best 6.5% +1438
7.7% +1200
7.7% +1200
8.3% +1100
7.7% +1200
+1.3pt
Boston Red Sox
5.9% +1609
6.3% +1500
Best 5.6% +1700
6.3% +1500
5.9% +1600
+0.1pt
Philadelphia Phillies
Best 3.8% +2532
4.8% +2000
5.6% +1700
4.3% +2200
4.3% +2200
+1.0pt
Houston Astros
Best 3.1% +3126
4.8% +2000
5.9% +1600
5.3% +1800
4.3% +2200
+2.0pt
San Diego Padres
2.7% +3604
Best 1.6% +6000
2.0% +5000
2.4% +4000
1.6% +6000
-0.8pt
Chicago White Sox
Best 2.4% +4155
3.2% +3000
2.8% +3500
3.2% +3000
2.9% +3300
+0.7pt
Detroit Tigers
2.1% +4551
2.4% +4000
Best 2.0% +5000
2.0% +5000
2.4% +4000
+0.1pt
Arizona Diamondbacks
1.5% +6797
1.5% +6600
2.4% +4000
1.6% +6000
Best 1.2% +8000
+0.3pt
Seattle Mariners
Best 1.4% +7307
1.6% +6000
2.0% +5000
1.8% +5500
1.5% +6500
+0.4pt
Texas Rangers
Best 1.3% +7900
2.8% +3500
2.4% +4000
3.5% +2800
2.8% +3500
+1.6pt
Cleveland Guardians
Best 1.1% +8991
1.6% +6000
2.2% +4500
1.6% +6000
1.6% +6000
+0.7pt
Toronto Blue Jays
0.8% +12400
1.2% +8000
1.2% +8000
2.0% +5000
Best 0.8% +12500
+0.5pt
Minnesota Twins
Best 0.4% +22122
1.0% +10000
1.0% +10000
1.2% +8000
1.2% +8000
+0.7pt
Miami Marlins
0.3% +33233
0.4% +25000
0.5% +20000
0.4% +25000
Best 0.3% +40000
+0.1pt
Baltimore Orioles
Best 0.3% +39900
0.7% +15000
1.0% +10000
0.8% +13000
0.6% +17500
+0.5pt
Washington Nationals
0.3% +39900
Best 0.1% +100000
0.4% +25000
0.2% +50000
0.1% +100000
-0.1pt
St. Louis Cardinals
0.3% +39900
Best 0.2% +50000
0.4% +25000
0.2% +45000
0.2% +50000
+0.0pt
Pittsburgh Pirates
Best 0.1% +66567
0.3% +40000
0.5% +20000
0.2% +45000
0.2% +50000
+0.1pt
Cincinnati Reds
Best 0.1% +199900
0.2% +50000
0.2% +50000
0.2% +45000
0.1% +100000
+0.1pt
Colorado Rockies
Best 0.1% +199900
0.1% +100000
0.1% +75000
0.2% +50000
0.1% +100000 stale · 9d ago
+0.1pt
San Francisco Giants
Best 0.1% +199900
0.1% +100000
0.2% +50000
0.2% +50000
0.1% +100000 stale · 9d ago
+0.1pt
New York Mets
Best 0.1% +199900
0.2% +50000
0.2% +50000
0.2% +50000
0.1% +100000
+0.1pt
Kansas City Royals
Best 0.1% +199900
0.1% +100000
0.2% +50000
0.2% +50000
0.1% +100000 stale · 9d ago
+0.1pt
Los Angeles Angels
Best 0.1% +199900
0.1% +100000
0.2% +50000
0.2% +50000
0.1% +100000 stale · 9d ago
+0.1pt
Athletics
Best 0.1% +199900
0.1% +100000
0.2% +50000
0.2% +50000
0.1% +100000 stale · 9d ago
+0.1pt

Prices are implied probability derived from each venue's live quote (exchange price or American odds with vig). Best marks the single highest-payout price across every venue for that entrant. Edge = sportsbook-consensus probability minus exchange probability, in percentage points — a positive edge means sportsbooks price that outcome higher than the exchange does. Stale flags any quote observed more than 48 hours ago.

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Frequently Asked Questions

What is the odds gap between exchanges and sportsbooks on the World Series?
Our data shows the widest current gap is on Los Angeles Dodgers: Polymarket prices it at 34.5%, while sportsbooks imply 39.0% on average — a +4.5pt difference on the identical outcome.
Where can I get the best price on the World Series?
It depends on the entrant — the table above marks the single best (highest-implied-payout) price per entrant across every tracked venue. No one venue wins across the board: Polymarket and BetMGM, BetRivers, DraftKings, FanDuel each lead on different entrants.
How many venues does Odds Reference track for the World Series?
5 venues currently: Polymarket as prediction-market exchange, and BetMGM, BetRivers, DraftKings, FanDuel as sportsbooks, across 30 entrants with a live quote from both venue types.
Why do exchange and sportsbook prices differ for the World Series?
Prediction-market exchanges like Polymarket set prices through open order-book trading, while sportsbooks price futures using their own risk models and hold a built-in vig. The two rarely land on an identical number — our data shows gaps of several points are common, and occasionally exceed 5 points on a single entrant, as with Los Angeles Dodgers above.

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