The Prediction Markets

Tampa Bay vs Milwaukee: First 5 Innings

Starts in 18 hKickoff
Traded
$150K
Venues
Polymarket, Kalshi
Prices updated
just now
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What the markets expect

O/U 3.5 82.5%

Next is Milwaukee Brewers O/U 1.5 at 81%. 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
O/U 3.5
82.5%
Polymarket 82.5%polled, 39s agoBest Yes 84¢ on Polymarket, $100 pays $119 (1.19x)
Polymarket
Contract
O/U 3.5
Last price
82.5%
As of
Polled just now
Buy Yes
84¢
Sell Yes
81¢
$100 on Yes pays
$119 (1.19x)
Trade this on Polymarket
Milwaukee Brewers O/U 1.5
81%
Polymarket 81%polled, 39s agoBest Yes 84¢ on Polymarket, $100 pays $119 (1.19x)
Polymarket
Contract
Milwaukee Brewers O/U 1.5
Last price
81%
As of
Polled just now
Buy Yes
84¢
Sell Yes
78¢
$100 on Yes pays
$119 (1.19x)
Trade this on Polymarket
O/U 4.5
73%
Polymarket 73%polled, 39s agoBest Yes 74¢ on Polymarket, $100 pays $135 (1.35x)
Polymarket
Contract
O/U 4.5
Last price
73%
As of
Polled just now
Buy Yes
74¢
Sell Yes
72¢
$100 on Yes pays
$135 (1.35x)
Volume
$32
Trade this on Polymarket
Tampa Bay Rays O/U 1.5
69.5%
Polymarket 69.5%polled, 39s agoBest Yes 71¢ on Polymarket, $100 pays $141 (1.41x)
Polymarket
Contract
Tampa Bay Rays O/U 1.5
Last price
69.5%
As of
Polled just now
Buy Yes
71¢
Sell Yes
68¢
$100 on Yes pays
$141 (1.41x)
Volume
$3
Trade this on Polymarket
Milwaukee Brewers O/U 2.5
65.5%
Polymarket 65.5%polled, 39s agoBest Yes 67¢ on Polymarket, $100 pays $149 (1.49x)
Polymarket
Contract
Milwaukee Brewers O/U 2.5
Last price
65.5%
As of
Polled just now
Buy Yes
67¢
Sell Yes
64¢
$100 on Yes pays
$149 (1.49x)
Trade this on Polymarket
1st 5 Innings O/U 2.5
62.5%
Polymarket 62.5%polled, 39s agoBest Yes 64¢ on Polymarket, $100 pays $156 (1.56x)
Polymarket
Contract
1st 5 Innings O/U 2.5
Last price
62.5%
As of
Polled just now
Buy Yes
64¢
Sell Yes
61¢
$100 on Yes pays
$156 (1.56x)
Volume
$5
Trade this on Polymarket
O/U 5.5
60.5%
Polymarket 60.5%polled, 39s agoBest Yes 61¢ on Polymarket, $100 pays $164 (1.64x)
Polymarket
Contract
O/U 5.5
Last price
60.5%
As of
Polled just now
Buy Yes
61¢
Sell Yes
60¢
$100 on Yes pays
$164 (1.64x)
Volume
$183
Trade this on Polymarket
Milwaukee
54%
Kalshi 54%polled, 56s agoBest Yes 54¢ on Kalshi, $100 pays $185 (1.85x)
Kalshi
Contract
Milwaukee
Last price
54%
As of
Polled just now
Buy Yes
54¢
Sell Yes
53¢
$100 on Yes pays
$185 (1.85x)
Volume
$17K
Trade this on Kalshi
Tampa Bay Rays O/U 0.5
53%
Polymarket 53%polled, 39s agoBest Yes 99¢ on Polymarket, $100 pays $101 (1.01x)
Polymarket
Contract
Tampa Bay Rays O/U 0.5
Last price
53%
As of
Polled just now
Buy Yes
99¢
Sell Yes
7¢
$100 on Yes pays
$101 (1.01x)
Trade this on Polymarket
O/U 6.5
51.5%
Polymarket 51.5%polled, 39s agoBest Yes 52¢ on Polymarket, $100 pays $192 (1.92x)
Polymarket
Contract
O/U 6.5
Last price
51.5%
As of
Polled just now
Buy Yes
52¢
Sell Yes
51¢
$100 on Yes pays
$192 (1.92x)
Volume
$1K
Trade this on Polymarket
Show 28 more outcomes
Tampa Bay Rays O/U 2.5
50.5%
Polymarket 50.5%polled, 39s agoBest Yes 52¢ on Polymarket, $100 pays $192 (1.92x)
Polymarket
Contract
Tampa Bay Rays O/U 2.5
Last price
50.5%
As of
Polled just now
Buy Yes
52¢
Sell Yes
49¢
$100 on Yes pays
$192 (1.92x)
Volume
$8
Trade this on Polymarket
Milwaukee Brewers O/U 3.5
49.5%
Polymarket 49.5%polled, 39s agoBest Yes 51¢ on Polymarket, $100 pays $196 (1.96x)
Polymarket
Contract
Milwaukee Brewers O/U 3.5
Last price
49.5%
As of
Polled just now
Buy Yes
51¢
Sell Yes
48¢
$100 on Yes pays
$196 (1.96x)
Trade this on Polymarket
1st 5 Innings O/U 3.5
47.5%
Polymarket 47.5%polled, 39s agoBest Yes 49¢ on Polymarket, $100 pays $204 (2.04x)
Polymarket
Contract
1st 5 Innings O/U 3.5
Last price
47.5%
As of
Polled just now
Buy Yes
49¢
Sell Yes
46¢
$100 on Yes pays
$204 (2.04x)
Volume
$10
Trade this on Polymarket
Spread: Milwaukee Brewers (-1.5)
41.5%
Polymarket 41.5%polled, 39s agoBest Yes 42¢ on Polymarket, $100 pays $238 (2.38x)
Polymarket
Contract
Spread: Milwaukee Brewers (-1.5)
Last price
41.5%
As of
Polled just now
Buy Yes
42¢
Sell Yes
41¢
$100 on Yes pays
$238 (2.38x)
Volume
$660
Trade this on Polymarket
NRFI
39.5%
Polymarket 39.5%polled, 39s agoBest Yes 41¢ on Polymarket, $100 pays $244 (2.44x)
Polymarket
Contract
NRFI
Last price
39.5%
As of
Polled just now
Buy Yes
41¢
Sell Yes
38¢
$100 on Yes pays
$244 (2.44x)
Volume
$98
Trade this on Polymarket
Tampa Bay Rays vs. Milwaukee Brewers
37.5%
Polymarket 37.5%polled, 39s agoBest Yes 38¢ on Polymarket, $100 pays $263 (2.63x)
Polymarket
Contract
Tampa Bay Rays vs. Milwaukee Brewers
Last price
37.5%
As of
Polled just now
Buy Yes
38¢
Sell Yes
37¢
$100 on Yes pays
$263 (2.63x)
Volume
$112K
Trade this on Polymarket
O/U 7.5
37%
Polymarket 37%polled, 39s agoBest Yes 38¢ on Polymarket, $100 pays $263 (2.63x)
Polymarket
Contract
O/U 7.5
Last price
37%
As of
Polled just now
Buy Yes
38¢
Sell Yes
36¢
$100 on Yes pays
$263 (2.63x)
Volume
$18
Trade this on Polymarket
Milwaukee Brewers O/U 4.5
35.5%
Polymarket 35.5%polled, 39s agoBest Yes 37¢ on Polymarket, $100 pays $270 (2.70x)
Polymarket
Contract
Milwaukee Brewers O/U 4.5
Last price
35.5%
As of
Polled just now
Buy Yes
37¢
Sell Yes
34¢
$100 on Yes pays
$270 (2.70x)
Volume
$5
Trade this on Polymarket
1st 5 Innings Spread: Milwaukee Brewers (-1.5)
35%
Polymarket 35%polled, 39s agoBest Yes 36¢ on Polymarket, $100 pays $278 (2.78x)
Polymarket
Contract
1st 5 Innings Spread: Milwaukee Brewers (-1.5)
Last price
35%
As of
Polled just now
Buy Yes
36¢
Sell Yes
34¢
$100 on Yes pays
$278 (2.78x)
Trade this on Polymarket
Tampa Bay Rays O/U 3.5
35%
Polymarket 35%polled, 39s agoBest Yes 37¢ on Polymarket, $100 pays $270 (2.70x)
Polymarket
Contract
Tampa Bay Rays O/U 3.5
Last price
35%
As of
Polled just now
Buy Yes
37¢
Sell Yes
33¢
$100 on Yes pays
$270 (2.70x)
Trade this on Polymarket
1st 5 Innings O/U 4.5
34%
Polymarket 34%polled, 39s agoBest Yes 35¢ on Polymarket, $100 pays $286 (2.86x)
Polymarket
Contract
1st 5 Innings O/U 4.5
Last price
34%
As of
Polled just now
Buy Yes
35¢
Sell Yes
33¢
$100 on Yes pays
$286 (2.86x)
Volume
$5
Trade this on Polymarket
Tampa Bay
30%
Kalshi 30%polled, 56s agoBest Yes 30¢ on Kalshi, $100 pays $333 (3.33x)
Kalshi
Contract
Tampa Bay
Last price
30%
As of
Polled just now
Buy Yes
30¢
Sell Yes
29¢
$100 on Yes pays
$333 (3.33x)
Volume
$14K
Trade this on Kalshi
O/U 8.5
29%
Polymarket 29%polled, 39s agoBest Yes 30¢ on Polymarket, $100 pays $333 (3.33x)
Polymarket
Contract
O/U 8.5
Last price
29%
As of
Polled just now
Buy Yes
30¢
Sell Yes
28¢
$100 on Yes pays
$333 (3.33x)
Trade this on Polymarket
Spread: Milwaukee Brewers (-2.5)
29%
Polymarket 29%polled, 39s agoBest Yes 30¢ on Polymarket, $100 pays $333 (3.33x)
Polymarket
Contract
Spread: Milwaukee Brewers (-2.5)
Last price
29%
As of
Polled just now
Buy Yes
30¢
Sell Yes
28¢
$100 on Yes pays
$333 (3.33x)
Volume
$12
Trade this on Polymarket
Spread: Tampa Bay Rays (-1.5)
25.5%
Polymarket 25.5%polled, 39s agoBest Yes 26¢ on Polymarket, $100 pays $385 (3.85x)
Polymarket
Contract
Spread: Tampa Bay Rays (-1.5)
Last price
25.5%
As of
Polled just now
Buy Yes
26¢
Sell Yes
25¢
$100 on Yes pays
$385 (3.85x)
Volume
$125
Trade this on Polymarket
Milwaukee Brewers O/U 5.5
24.5%
Polymarket 24.5%polled, 39s agoBest Yes 26¢ on Polymarket, $100 pays $385 (3.85x)
Polymarket
Contract
Milwaukee Brewers O/U 5.5
Last price
24.5%
As of
Polled just now
Buy Yes
26¢
Sell Yes
23¢
$100 on Yes pays
$385 (3.85x)
Trade this on Polymarket
Tampa Bay Rays O/U 4.5
23.5%
Polymarket 23.5%polled, 39s agoBest Yes 26¢ on Polymarket, $100 pays $385 (3.85x)
Polymarket
Contract
Tampa Bay Rays O/U 4.5
Last price
23.5%
As of
Polled just now
Buy Yes
26¢
Sell Yes
21¢
$100 on Yes pays
$385 (3.85x)
Trade this on Polymarket
1st 5 Innings O/U 5.5
23%
Polymarket 23%polled, 39s agoBest Yes 25¢ on Polymarket, $100 pays $400 (4.00x)
Polymarket
Contract
1st 5 Innings O/U 5.5
Last price
23%
As of
Polled just now
Buy Yes
25¢
Sell Yes
21¢
$100 on Yes pays
$400 (4.00x)
Trade this on Polymarket
O/U 9.5
20.5%
Polymarket 20.5%polled, 39s agoBest Yes 22¢ on Polymarket, $100 pays $455 (4.55x)
Polymarket
Contract
O/U 9.5
Last price
20.5%
As of
Polled just now
Buy Yes
22¢
Sell Yes
19¢
$100 on Yes pays
$455 (4.55x)
Trade this on Polymarket
Spread: Milwaukee Brewers (-3.5)
20%
Polymarket 20%polled, 39s agoBest Yes 21¢ on Polymarket, $100 pays $476 (4.76x)
Polymarket
Contract
Spread: Milwaukee Brewers (-3.5)
Last price
20%
As of
Polled just now
Buy Yes
21¢
Sell Yes
19¢
$100 on Yes pays
$476 (4.76x)
Volume
$12
Trade this on Polymarket
1st 5 Innings Spread: Tampa Bay Rays (-1.5)
19%
Polymarket 19%polled, 39s agoBest Yes 20¢ on Polymarket, $100 pays $500 (5.00x)
Polymarket
Contract
1st 5 Innings Spread: Tampa Bay Rays (-1.5)
Last price
19%
As of
Polled just now
Buy Yes
20¢
Sell Yes
18¢
$100 on Yes pays
$500 (5.00x)
Volume
$14
Trade this on Polymarket
Tie
19%
Kalshi 19%polled, 56s agoBest Yes 19¢ on Kalshi, $100 pays $526 (5.26x)
Kalshi
Contract
Tie
Last price
19%
As of
Polled just now
Buy Yes
19¢
Sell Yes
18¢
$100 on Yes pays
$526 (5.26x)
Volume
$4K
Trade this on Kalshi
Spread: Tampa Bay Rays (-2.5)
16%
Polymarket 16%polled, 39s agoBest Yes 17¢ on Polymarket, $100 pays $588 (5.88x)
Polymarket
Contract
Spread: Tampa Bay Rays (-2.5)
Last price
16%
As of
Polled just now
Buy Yes
17¢
Sell Yes
15¢
$100 on Yes pays
$588 (5.88x)
Volume
$606
Trade this on Polymarket
1st 5 Innings O/U 6.5
15.5%
Polymarket 15.5%polled, 39s agoBest Yes 17¢ on Polymarket, $100 pays $588 (5.88x)
Polymarket
Contract
1st 5 Innings O/U 6.5
Last price
15.5%
As of
Polled just now
Buy Yes
17¢
Sell Yes
14¢
$100 on Yes pays
$588 (5.88x)
Trade this on Polymarket
Spread: Milwaukee Brewers (-4.5)
13%
Polymarket 13%polled, 39s agoBest Yes 15¢ on Polymarket, $100 pays $667 (6.67x)
Polymarket
Contract
Spread: Milwaukee Brewers (-4.5)
Last price
13%
As of
Polled just now
Buy Yes
15¢
Sell Yes
11¢
$100 on Yes pays
$667 (6.67x)
Trade this on Polymarket
Extra Innings
12.5%
Polymarket 12.5%polled, 39s agoBest Yes 14¢ on Polymarket, $100 pays $714 (7.14x)
Polymarket
Contract
Extra Innings
Last price
12.5%
As of
Polled just now
Buy Yes
14¢
Sell Yes
11¢
$100 on Yes pays
$714 (7.14x)
Volume
$36
Trade this on Polymarket
Spread: Tampa Bay Rays (-3.5)
10.5%
Polymarket 10.5%polled, 39s agoBest Yes 12¢ on Polymarket, $100 pays $833 (8.33x)
Polymarket
Contract
Spread: Tampa Bay Rays (-3.5)
Last price
10.5%
As of
Polled just now
Buy Yes
12¢
Sell Yes
9¢
$100 on Yes pays
$833 (8.33x)
Trade this on Polymarket
Spread: Tampa Bay Rays (-4.5)
4.5%
Polymarket 4.5%polled, 39s agoBest Yes 6¢ on Polymarket, $100 pays $1,667 (16.7x)
Polymarket
Contract
Spread: Tampa Bay Rays (-4.5)
Last price
4.5%
As of
Polled just now
Buy Yes
6¢
Sell Yes
3¢
$100 on Yes pays
$1,667 (16.7x)
Volume
$6
Trade this on Polymarket

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle, source: mlb.com
Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange), source: CBS Sports, ESPN, the Governing League

How the odds have moved

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

  • O/U 3.5
  • Milwaukee Brewers O/U 1.5
  • O/U 4.5

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 O/U 3.5 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 "Tampa Bay vs Milwaukee: First 5 Innings". O/U 3.5 leads at 82.5%. Next is Milwaukee Brewers O/U 1.5 at 81%. $150K has traded across 38 outcomes on Polymarket and Kalshi. The market is expected to resolve by Oct 27, 2026.

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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