The Prediction Markets

Pro Baseball World Series Champion 2026

Closes
Oct 31, 2026, in 9 days
Traded
$8.4M
Venues
Polymarket, Kalshi
Prices updated
just now
Share

What the markets expect

Milwaukee Brewers 63.8%

Next is Tampa Bay Rays at 36.6%. The venues list this event, but none of their outcomes are matched yet, so prices are shown separately.

Odds by venue

Consensus blends each venue’s last price, weighted by how much has traded there. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
Milwaukee Brewers
63.8%
Polymarket 63.8%polled, 19s agoBest Yes 63.8¢ on Polymarket, $100 pays $157 (1.57x)
Polymarket
Contract
Milwaukee Brewers
Last price
63.8%
As of
Polled just now
Buy Yes
63.8¢
Sell Yes
63.7¢
$100 on Yes pays
$157 (1.57x)
Volume
$1.1M
Trade this on Polymarket
Tampa Bay Rays
36.6%
Polymarket 36.6%polled, 19s agoBest Yes 36.6¢ on Polymarket, $100 pays $273 (2.73x)
Polymarket
Contract
Tampa Bay Rays
Last price
36.6%
As of
Polled just now
Buy Yes
36.6¢
Sell Yes
36.5¢
$100 on Yes pays
$273 (2.73x)
Volume
$148K
Trade this on Polymarket
Jackson Chourio
15%
Kalshi 15%polled, 19s agoBest Yes 15¢ on Kalshi, $100 pays $667 (6.67x)
Kalshi
Contract
Jackson Chourio
Last price
15%
As of
Polled just now
Buy Yes
15¢
Sell Yes
14¢
$100 on Yes pays
$667 (6.67x)
Volume
$89K
Trade this on Kalshi
William Contreras
13%
Kalshi 13%polled, 19s agoBest Yes 13¢ on Kalshi, $100 pays $769 (7.69x)
Kalshi
Contract
William Contreras
Last price
13%
As of
Polled just now
Buy Yes
13¢
Sell Yes
12¢
$100 on Yes pays
$769 (7.69x)
Volume
$94K
Trade this on Kalshi
Brice Turang
9.8%
Kalshi 9.8%polled, 19s agoBest Yes 9.8¢ on Kalshi, $100 pays $1,020 (10.2x)
Kalshi
Contract
Brice Turang
Last price
9.8%
As of
Polled just now
Buy Yes
9.8¢
Sell Yes
9.3¢
$100 on Yes pays
$1,020 (10.2x)
Volume
$36K
Trade this on Kalshi
Jacob Misiorowski
9.5%
Kalshi 9.5%polled, 19s agoBest Yes 9.5¢ on Kalshi, $100 pays $1,053 (10.5x)
Kalshi
Contract
Jacob Misiorowski
Last price
9.5%
As of
Polled just now
Buy Yes
9.5¢
Sell Yes
9.4¢
$100 on Yes pays
$1,053 (10.5x)
Volume
$59K
Trade this on Kalshi
Junior Caminero
9.4%
Kalshi 9.4%polled, 19s agoBest Yes 9.4¢ on Kalshi, $100 pays $1,064 (10.6x)
Kalshi
Contract
Junior Caminero
Last price
9.4%
As of
Polled just now
Buy Yes
9.4¢
Sell Yes
9.1¢
$100 on Yes pays
$1,064 (10.6x)
Volume
$68K
Trade this on Kalshi
Yandy Díaz
8.6%
Kalshi 8.6%polled, 19s agoBest Yes 8.6¢ on Kalshi, $100 pays $1,163 (11.6x)
Kalshi
Contract
Yandy Díaz
Last price
8.6%
As of
Polled just now
Buy Yes
8.6¢
Sell Yes
8.5¢
$100 on Yes pays
$1,163 (11.6x)
Volume
$43K
Trade this on Kalshi
Jake Bauers
7.5%
Kalshi 7.5%polled, 19s agoBest Yes 7.6¢ on Kalshi, $100 pays $1,316 (13.2x)
Kalshi
Contract
Jake Bauers
Last price
7.5%
As of
Polled just now
Buy Yes
7.6¢
Sell Yes
7¢
$100 on Yes pays
$1,316 (13.2x)
Volume
$40K
Trade this on Kalshi
Drew Rasmussen
5.1%
Kalshi 5.1%polled, 19s agoBest Yes 5.1¢ on Kalshi, $100 pays $1,961 (19.6x)
Kalshi
Contract
Drew Rasmussen
Last price
5.1%
As of
Polled just now
Buy Yes
5.1¢
Sell Yes
5¢
$100 on Yes pays
$1,961 (19.6x)
Volume
$44K
Trade this on Kalshi
Show 32 more outcomes
Garrett Mitchell
4.7%
Kalshi 4.7%polled, 19s agoBest Yes 4.7¢ on Kalshi, $100 pays $2,128 (21.3x)
Kalshi
Contract
Garrett Mitchell
Last price
4.7%
As of
Polled just now
Buy Yes
4.7¢
Sell Yes
4.6¢
$100 on Yes pays
$2,128 (21.3x)
Volume
$72K
Trade this on Kalshi
Christian Yelich
4.2%
Kalshi 4.2%polled, 19s agoBest Yes 4.2¢ on Kalshi, $100 pays $2,381 (23.8x)
Kalshi
Contract
Christian Yelich
Last price
4.2%
As of
Polled just now
Buy Yes
4.2¢
Sell Yes
4.1¢
$100 on Yes pays
$2,381 (23.8x)
Volume
$63K
Trade this on Kalshi
Jonathan Aranda
3.7%
Kalshi 3.7%polled, 19s agoBest Yes 3.7¢ on Kalshi, $100 pays $2,703 (27.0x)
Kalshi
Contract
Jonathan Aranda
Last price
3.7%
As of
Polled just now
Buy Yes
3.7¢
Sell Yes
3.6¢
$100 on Yes pays
$2,703 (27.0x)
Volume
$35K
Trade this on Kalshi
Aaron Ashby
2.4%
Kalshi 2.4%polled, 19s agoBest Yes 2.5¢ on Kalshi, $100 pays $4,000 (40.0x)
Kalshi
Contract
Aaron Ashby
Last price
2.4%
As of
Polled just now
Buy Yes
2.5¢
Sell Yes
2.4¢
$100 on Yes pays
$4,000 (40.0x)
Volume
$57K
Trade this on Kalshi
Liam Hicks
2.1%
Kalshi 2.1%polled, 19s agoBest Yes 2.1¢ on Kalshi, $100 pays $4,762 (47.6x)
Kalshi
Contract
Liam Hicks
Last price
2.1%
As of
Polled just now
Buy Yes
2.1¢
Sell Yes
2¢
$100 on Yes pays
$4,762 (47.6x)
Volume
$5K
Trade this on Kalshi
Freddy Peralta
2%
Kalshi 2%polled, 19s agoBest Yes 2.3¢ on Kalshi, $100 pays $4,348 (43.5x)
Kalshi
Contract
Freddy Peralta
Last price
2%
As of
Polled just now
Buy Yes
2.3¢
Sell Yes
2¢
$100 on Yes pays
$4,348 (43.5x)
Volume
$41K
Trade this on Kalshi
Cooper Pratt
1.4%
Kalshi 1.4%polled, 19s agoBest Yes 1.4¢ on Kalshi, $100 pays $7,143 (71.4x)
Kalshi
Contract
Cooper Pratt
Last price
1.4%
As of
Polled just now
Buy Yes
1.4¢
Sell Yes
1.3¢
$100 on Yes pays
$7,143 (71.4x)
Volume
$44K
Trade this on Kalshi
Chandler Simpson
1.2%
Kalshi 1.2%polled, 19s agoBest Yes 1.2¢ on Kalshi, $100 pays $8,333 (83.3x)
Kalshi
Contract
Chandler Simpson
Last price
1.2%
As of
Polled just now
Buy Yes
1.2¢
Sell Yes
1.1¢
$100 on Yes pays
$8,333 (83.3x)
Volume
$81K
Trade this on Kalshi
Nick Martinez
1%
Kalshi 1%polled, 19s agoBest Yes 1.1¢ on Kalshi, $100 pays $9,091 (90.9x)
Kalshi
Contract
Nick Martinez
Last price
1%
As of
Polled just now
Buy Yes
1.1¢
Sell Yes
1¢
$100 on Yes pays
$9,091 (90.9x)
Volume
$23K
Trade this on Kalshi
Bryan Baker
0.8%
Kalshi 0.8%polled, 19s agoBest Yes 0.8¢ on Kalshi, $100 pays $12,500 (125x)
Kalshi
Contract
Bryan Baker
Last price
0.8%
As of
Polled just now
Buy Yes
0.8¢
Sell Yes
0.5¢
$100 on Yes pays
$12,500 (125x)
Volume
$12K
Trade this on Kalshi
Jonny DeLuca
0.8%
Kalshi 0.8%polled, 19s agoBest Yes 0.8¢ on Kalshi, $100 pays $12,500 (125x)
Kalshi
Contract
Jonny DeLuca
Last price
0.8%
As of
Polled just now
Buy Yes
0.8¢
Sell Yes
0.7¢
$100 on Yes pays
$12,500 (125x)
Volume
$5K
Trade this on Kalshi
Sal Frelick
0.7%
Kalshi 0.7%polled, 19s agoBest Yes 0.7¢ on Kalshi, $100 pays $14,286 (143x)
Kalshi
Contract
Sal Frelick
Last price
0.7%
As of
Polled just now
Buy Yes
0.7¢
Sell Yes
0.6¢
$100 on Yes pays
$14,286 (143x)
Volume
$61K
Trade this on Kalshi
Andrew Vaughn
0.6%
Kalshi 0.6%polled, 19s agoBest Yes 0.6¢ on Kalshi, $100 pays $16,667 (167x)
Kalshi
Contract
Andrew Vaughn
Last price
0.6%
As of
Polled just now
Buy Yes
0.6¢
Sell Yes
0.5¢
$100 on Yes pays
$16,667 (167x)
Volume
$12K
Trade this on Kalshi
Trevor Megill
0.6%
Kalshi 0.6%polled, 19s agoBest Yes 0.7¢ on Kalshi, $100 pays $14,286 (143x)
Kalshi
Contract
Trevor Megill
Last price
0.6%
As of
Polled just now
Buy Yes
0.7¢
Sell Yes
0.6¢
$100 on Yes pays
$14,286 (143x)
Volume
$34K
Trade this on Kalshi
Abner Uribe
0.5%
Kalshi 0.5%polled, 19s agoBest Yes 0.5¢ on Kalshi, $100 pays $20,000 (200x)
Kalshi
Contract
Abner Uribe
Last price
0.5%
As of
Polled just now
Buy Yes
0.5¢
Sell Yes
0.4¢
$100 on Yes pays
$20,000 (200x)
Volume
$11K
Trade this on Kalshi
Joey Ortiz
0.5%
Kalshi 0.5%polled, 19s agoBest Yes 0.5¢ on Kalshi, $100 pays $20,000 (200x)
Kalshi
Contract
Joey Ortiz
Last price
0.5%
As of
Polled just now
Buy Yes
0.5¢
Sell Yes
0.4¢
$100 on Yes pays
$20,000 (200x)
Volume
$18K
Trade this on Kalshi
Luis Lara
0.5%
Kalshi 0.5%polled, 19s agoBest Yes 0.5¢ on Kalshi, $100 pays $20,000 (200x)
Kalshi
Contract
Luis Lara
Last price
0.5%
As of
Polled just now
Buy Yes
0.5¢
Sell Yes
0.4¢
$100 on Yes pays
$20,000 (200x)
Volume
$35K
Trade this on Kalshi
Robert Gasser
0.4%
Kalshi 0.4%polled, 19s agoBest Yes 0.4¢ on Kalshi, $100 pays $25,000 (250x)
Kalshi
Contract
Robert Gasser
Last price
0.4%
As of
Polled just now
Buy Yes
0.4¢
Sell Yes
0.2¢
$100 on Yes pays
$25,000 (250x)
Volume
$19K
Trade this on Kalshi
Cedric Mullins
0.3%
Kalshi 0.3%polled, 19s agoBest Yes 0.3¢ on Kalshi, $100 pays $33,333 (333x)
Kalshi
Contract
Cedric Mullins
Last price
0.3%
As of
Polled just now
Buy Yes
0.3¢
Sell Yes
0.2¢
$100 on Yes pays
$33,333 (333x)
Volume
$48K
Trade this on Kalshi
Dustin May
0.3%
Kalshi 0.3%polled, 19s agoBest Yes 0.3¢ on Kalshi, $100 pays $33,333 (333x)
Kalshi
Contract
Dustin May
Last price
0.3%
As of
Polled just now
Buy Yes
0.3¢
Sell Yes
0.2¢
$100 on Yes pays
$33,333 (333x)
Volume
$6K
Trade this on Kalshi
Shane Drohan
0.3%
Kalshi 0.3%polled, 19s agoBest Yes 0.3¢ on Kalshi, $100 pays $33,333 (333x)
Kalshi
Contract
Shane Drohan
Last price
0.3%
As of
Polled just now
Buy Yes
0.3¢
Sell Yes
0.2¢
$100 on Yes pays
$33,333 (333x)
Volume
$1K
Trade this on Kalshi
DL Hall
0.2%
Kalshi 0.2%polled, 19s agoBest Yes 0.2¢ on Kalshi, $100 pays $50,000 (500x)
Kalshi
Contract
DL Hall
Last price
0.2%
As of
Polled just now
Buy Yes
0.2¢
Sell Yes
0.1¢
$100 on Yes pays
$50,000 (500x)
Volume
$6K
Trade this on Kalshi
Cade Smith
0.1%
Kalshi 0.1%polled, 19s agoBest Yes 0.1¢ on Kalshi, $100 pays $100,000 (1000x)
Kalshi
Contract
Cade Smith
Last price
0.1%
As of
Polled just now
Buy Yes
0.1¢
Sell Yes
—
$100 on Yes pays
$100,000 (1000x)
Volume
$39K
Trade this on Kalshi
Chase DeLauter
0.1%
Kalshi 0.1%polled, 19s agoBest Yes 0.1¢ on Kalshi, $100 pays $100,000 (1000x)
Kalshi
Contract
Chase DeLauter
Last price
0.1%
As of
Polled just now
Buy Yes
0.1¢
Sell Yes
—
$100 on Yes pays
$100,000 (1000x)
Volume
$30K
Trade this on Kalshi
Gavin Williams
0.1%
Kalshi 0.1%polled, 19s agoBest Yes 0.1¢ on Kalshi, $100 pays $100,000 (1000x)
Kalshi
Contract
Gavin Williams
Last price
0.1%
As of
Polled just now
Buy Yes
0.1¢
Sell Yes
—
$100 on Yes pays
$100,000 (1000x)
Volume
$30K
Trade this on Kalshi
Griffin Jax
0.1%
Kalshi 0.1%polled, 19s agoBest Yes 0.2¢ on Kalshi, $100 pays $50,000 (500x)
Kalshi
Contract
Griffin Jax
Last price
0.1%
As of
Polled just now
Buy Yes
0.2¢
Sell Yes
0.1¢
$100 on Yes pays
$50,000 (500x)
Volume
$8K
Trade this on Kalshi
Jo Adell
0.1%
Kalshi 0.1%polled, 19s agoBest Yes 0.1¢ on Kalshi, $100 pays $100,000 (1000x)
Kalshi
Contract
Jo Adell
Last price
0.1%
As of
Polled just now
Buy Yes
0.1¢
Sell Yes
—
$100 on Yes pays
$100,000 (1000x)
Volume
$28K
Trade this on Kalshi
José Ramírez
0.1%
Kalshi 0.1%polled, 19s agoBest Yes 0.1¢ on Kalshi, $100 pays $100,000 (1000x)
Kalshi
Contract
José Ramírez
Last price
0.1%
As of
Polled just now
Buy Yes
0.1¢
Sell Yes
—
$100 on Yes pays
$100,000 (1000x)
Volume
$60K
Trade this on Kalshi
Shane McClanahan
0.1%
Kalshi 0.1%polled, 19s agoBest Yes 0.1¢ on Kalshi, $100 pays $100,000 (1000x)
Kalshi
Contract
Shane McClanahan
Last price
0.1%
As of
Polled just now
Buy Yes
0.1¢
Sell Yes
—
$100 on Yes pays
$100,000 (1000x)
Volume
$8K
Trade this on Kalshi
Steven Kwan
0.1%
Kalshi 0.1%polled, 19s agoBest Yes 0.1¢ on Kalshi, $100 pays $100,000 (1000x)
Kalshi
Contract
Steven Kwan
Last price
0.1%
As of
Polled just now
Buy Yes
0.1¢
Sell Yes
—
$100 on Yes pays
$100,000 (1000x)
Volume
$31K
Trade this on Kalshi
Tanner Bibee
0.1%
Kalshi 0.1%polled, 19s agoBest Yes 0.1¢ on Kalshi, $100 pays $100,000 (1000x)
Kalshi
Contract
Tanner Bibee
Last price
0.1%
As of
Polled just now
Buy Yes
0.1¢
Sell Yes
—
$100 on Yes pays
$100,000 (1000x)
Volume
$6K
Trade this on Kalshi
Travis Bazzana
0.1%
Kalshi 0.1%polled, 19s agoBest Yes 0.1¢ on Kalshi, $100 pays $100,000 (1000x)
Kalshi
Contract
Travis Bazzana
Last price
0.1%
As of
Polled just now
Buy Yes
0.1¢
Sell Yes
—
$100 on Yes pays
$100,000 (1000x)
Volume
$31K
Trade this on Kalshi

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle
Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange), source: the Governing League

How the odds have moved

The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.

  • Milwaukee Brewers
  • Tampa Bay Rays
  • Jackson Chourio

Order books

Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

Top of book

Connecting
Best bid
—
Spread
—
Best ask
—

Waiting for the first live quote…

Depth · top 8 levels

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Recent trades

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Kalshi

Kalshi doesn’t list Milwaukee Brewers for this event.

What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

$
Buy

Loading both order books…

Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.05 × price × (1 − price) per share (sports rate). Fee calculator. Estimates only, not advice.

About this market

Live prediction market odds for "Pro Baseball World Series Champion 2026". Milwaukee Brewers leads at 63.8%. Next is Tampa Bay Rays at 36.6%. $8.4M has traded across 42 outcomes on Polymarket and Kalshi. The market is expected to resolve by Oct 31, 2026.

This market will resolve according to the team that wins the 2026 MLB World Series. If at any point it becomes impossible for a listed team to win the 2026 MLB World Series per the rules of MLB (e.g., they are eliminated in the playoffs), the corresponding market will resolve to “No”. If the 2026 MLB season is cancelled, postponed after December 31, 2026 ET, or there is otherwise no winner declared within that timeframe, this market will resolve to “Other”. The primary resolution source will be official information from MLB (https://www.mlb.com/); however, a consensus of credible reporting may also be used.

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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