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 New York Yankees, priced at 9.5% on Polymarket versus an average of 12.8% across sportsbooks — a +3.4pt 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
39.5% +153
39.2% +155
39.2% +155
Best 38.5% +160
40.0% +150
-0.3pt
New York Yankees
Best 9.5% +953
11.8% +750
15.4% +550
11.8% +750
12.5% +700
+3.4pt
Boston Red Sox
8.1% +1135
8.3% +1100
Best 7.1% +1300
7.7% +1200
8.3% +1100
-0.2pt
Milwaukee Brewers
Best 7.9% +1166
9.1% +1000
11.1% +800
9.5% +950
10.0% +900
+2.0pt
Atlanta Braves
Best 7.3% +1261
8.3% +1100
9.1% +1000
9.1% +1000
7.7% +1200
+1.2pt
Tampa Bay Rays
6.8% +1371
6.7% +1400
7.7% +1200
8.3% +1100
Best 6.3% +1500
+0.4pt
Chicago Cubs
Best 5.7% +1670
7.7% +1200
6.3% +1500
7.7% +1200
7.1% +1300
+1.5pt
Philadelphia Phillies
Best 4.0% +2400
5.0% +1900
6.3% +1500
5.0% +1900
5.3% +1800
+1.4pt
Chicago White Sox
Best 2.5% +3982
3.2% +3000
3.2% +3000
3.2% +3000
3.2% +3000
+0.8pt
Houston Astros
Best 2.3% +4344
4.3% +2200
4.8% +2000
4.8% +2000
4.3% +2200
+2.3pt
Seattle Mariners
Best 2.1% +4551
2.4% +4000
2.4% +4000
2.4% +4000
2.2% +4500
+0.2pt
Detroit Tigers
1.9% +5028
1.5% +6600
Best 1.3% +7500
1.4% +7000
1.6% +6000
-0.5pt
Texas Rangers
Best 1.6% +6352
2.8% +3500
3.2% +3000
4.3% +2200
3.2% +3000
+1.8pt
Arizona Diamondbacks
1.5% +6797
1.5% +6600
2.4% +4000
1.8% +5500
Best 1.3% +7500
+0.3pt
San Diego Padres
Best 1.5% +6797
1.5% +6600
2.0% +5000
1.6% +6000
1.6% +6000
+0.2pt
Cleveland Guardians
Best 1.3% +7900
2.0% +5000
2.0% +5000
1.8% +5500
2.0% +5000
+0.7pt
Toronto Blue Jays
0.9% +11011
1.0% +10000
Best 0.4% +25000
1.1% +9000
0.8% +12500
-0.1pt
Minnesota Twins
Best 0.4% +22122
1.1% +9000
1.0% +10000
1.2% +8000
1.2% +8000
+0.7pt
Washington Nationals
0.3% +33233
Best 0.1% +100000
0.4% +25000
0.2% +50000
0.1% +100000
-0.1pt
Miami Marlins
0.3% +39900
0.3% +35000
0.5% +20000
0.4% +25000
Best 0.2% +60000
+0.1pt
Pittsburgh Pirates
Best 0.3% +39900
0.5% +20000
0.5% +20000
0.5% +20000
0.4% +22500
+0.2pt
Baltimore Orioles
Best 0.1% +66567
0.8% +12500
1.0% +10000
0.8% +12000
0.8% +12500
+0.7pt
St. Louis Cardinals
0.1% +66567
0.2% +50000
0.4% +25000
0.3% +40000
Best 0.1% +70000
+0.1pt
Cincinnati Reds
Best 0.1% +199900
0.2% +50000
0.2% +50000
0.3% +40000
0.1% +100000
+0.1pt
San Francisco Giants
Best 0.1% +199900
0.1% +100000
0.2% +50000
0.2% +50000
0.1% +100000 stale · 4d ago
+0.1pt
New York Mets
Best 0.1% +199900
0.2% +50000
0.2% +50000
0.2% +50000
0.1% +100000 stale · 4d ago
+0.1pt
Kansas City Royals
Best 0.1% +199900
0.1% +100000
0.2% +50000
0.2% +50000
0.1% +100000 stale · 4d ago
+0.1pt
Los Angeles Angels
Best 0.1% +199900
0.1% +100000
0.2% +50000
0.2% +50000
0.1% +100000 stale · 4d ago
+0.1pt
Colorado Rockies
Best 0.1% +199900
0.1% +100000
0.1% +75000
0.2% +50000
0.1% +100000 stale · 4d ago
+0.1pt
Athletics
Best 0.1% +199900
0.1% +100000
0.2% +50000
0.2% +50000
0.1% +100000 stale · 4d 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 New York Yankees: Polymarket prices it at 9.5%, while sportsbooks imply 12.8% on average — a +3.4pt 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 3 points on a single entrant, as with New York Yankees above.

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