The Prediction Markets

Tampa Bay vs Milwaukee: First 5 Spread

Starts in 20 hKickoff
Traded
$115K
Venues
Polymarket, Kalshi
Prices updated
just now
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What the markets expect

O/U 3.5 81%

Next is Milwaukee Brewers O/U 1.5 at 80.5%. 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.

1 of 39 prices are live from the exchange feeds; the rest come from our regular price polls, the oldest 2 min ago. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
O/U 3.5
81%
Polymarket 81%polled, 52s agoBest Yes 82¢ on Polymarket, $100 pays $122 (1.22x)
Polymarket
Contract
O/U 3.5
Last price
81%
As of
Polled just now
Buy Yes
82¢
Sell Yes
80¢
$100 on Yes pays
$122 (1.22x)
Trade this on Polymarket
Milwaukee Brewers O/U 1.5
80.5%
Polymarket 80.5%polled, 52s agoBest Yes 83¢ on Polymarket, $100 pays $120 (1.20x)
Polymarket
Contract
Milwaukee Brewers O/U 1.5
Last price
80.5%
As of
Polled just now
Buy Yes
83¢
Sell Yes
78¢
$100 on Yes pays
$120 (1.20x)
Trade this on Polymarket
O/U 4.5
73%
Polymarket 73%polled, 52s 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
$15
Trade this on Polymarket
Tampa Bay Rays O/U 1.5
68.5%
Polymarket 68.5%polled, 52s agoBest Yes 70¢ on Polymarket, $100 pays $143 (1.43x)
Polymarket
Contract
Tampa Bay Rays O/U 1.5
Last price
68.5%
As of
Polled just now
Buy Yes
70¢
Sell Yes
67¢
$100 on Yes pays
$143 (1.43x)
Trade this on Polymarket
Milwaukee Brewers O/U 2.5
66%
Polymarket 66%polled, 52s agoBest Yes 68¢ on Polymarket, $100 pays $147 (1.47x)
Polymarket
Contract
Milwaukee Brewers O/U 2.5
Last price
66%
As of
Polled just now
Buy Yes
68¢
Sell Yes
64¢
$100 on Yes pays
$147 (1.47x)
Trade this on Polymarket
1st 5 Innings O/U 2.5
62.5%
Polymarket 62.5%polled, 52s 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)
Trade this on Polymarket
O/U 5.5
60.5%
Polymarket 60.5%polled, 52s 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
Tampa Bay Rays O/U 0.5
53%
Polymarket 53%polled, 52s 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, 52s 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
Tampa Bay Rays O/U 2.5
50.5%
Polymarket 50.5%polled, 52s 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
$4
Trade this on Polymarket
Show 29 more outcomes
Milwaukee Brewers O/U 3.5
49.5%
Polymarket 49.5%polled, 52s 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, 52s 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)
Trade this on Polymarket
Spread: Milwaukee Brewers (-1.5)
41.5%
Polymarket 41.5%polled, 52s 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
$571
Trade this on Polymarket
NRFI
40.5%
Polymarket 40.5%polled, 52s agoBest Yes 41¢ on Polymarket, $100 pays $244 (2.44x)
Polymarket
Contract
NRFI
Last price
40.5%
As of
Polled just now
Buy Yes
41¢
Sell Yes
40¢
$100 on Yes pays
$244 (2.44x)
Volume
$98
Trade this on Polymarket
Tampa Bay Rays vs. Milwaukee Brewers
37.5%
Polymarket 37.5%live, 38s agoBest Yes 38¢ on Polymarket, $100 pays $263 (2.63x)
Polymarket
Contract
Tampa Bay Rays vs. Milwaukee Brewers
Price
37.5%
As of
Live feed, just now
Buy Yes
38¢
Sell Yes
37¢
$100 on Yes pays
$263 (2.63x)
Volume
$107K
Trade this on Polymarket
O/U 7.5
37%
Polymarket 37%polled, 52s 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, 52s 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)
Trade this on Polymarket
Milwaukee wins by over 1.5 runs
35%
Kalshi 35%polled, 2 min agoBest Yes 35¢ on Kalshi, $100 pays $286 (2.86x)
Kalshi
Contract
Milwaukee wins by over 1.5 runs
Last price
35%
As of
Polled 2 min ago
Buy Yes
35¢
Sell Yes
34¢
$100 on Yes pays
$286 (2.86x)
Volume
$6K
Trade this on Kalshi
Tampa Bay Rays O/U 3.5
35%
Polymarket 35%polled, 52s 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 Spread: Milwaukee Brewers (-1.5)
34.5%
Polymarket 34.5%polled, 52s agoBest Yes 36¢ on Polymarket, $100 pays $278 (2.78x)
Polymarket
Contract
1st 5 Innings Spread: Milwaukee Brewers (-1.5)
Last price
34.5%
As of
Polled just now
Buy Yes
36¢
Sell Yes
33¢
$100 on Yes pays
$278 (2.78x)
Trade this on Polymarket
1st 5 Innings O/U 4.5
33.5%
Polymarket 33.5%polled, 52s agoBest Yes 35¢ on Polymarket, $100 pays $286 (2.86x)
Polymarket
Contract
1st 5 Innings O/U 4.5
Last price
33.5%
As of
Polled just now
Buy Yes
35¢
Sell Yes
32¢
$100 on Yes pays
$286 (2.86x)
Trade this on Polymarket
O/U 8.5
29%
Polymarket 29%polled, 52s 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)
28.5%
Polymarket 28.5%polled, 52s agoBest Yes 29¢ on Polymarket, $100 pays $345 (3.45x)
Polymarket
Contract
Spread: Milwaukee Brewers (-2.5)
Last price
28.5%
As of
Polled just now
Buy Yes
29¢
Sell Yes
28¢
$100 on Yes pays
$345 (3.45x)
Volume
$5
Trade this on Polymarket
Spread: Tampa Bay Rays (-1.5)
25.5%
Polymarket 25.5%polled, 52s 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, 52s 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
1st 5 Innings O/U 5.5
23.5%
Polymarket 23.5%polled, 52s agoBest Yes 25¢ on Polymarket, $100 pays $400 (4.00x)
Polymarket
Contract
1st 5 Innings O/U 5.5
Last price
23.5%
As of
Polled just now
Buy Yes
25¢
Sell Yes
22¢
$100 on Yes pays
$400 (4.00x)
Trade this on Polymarket
Tampa Bay Rays O/U 4.5
23.5%
Polymarket 23.5%polled, 52s 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
Milwaukee wins by over 2.5 runs
21%
Kalshi 21%polled, 2 min agoBest Yes 22¢ on Kalshi, $100 pays $455 (4.55x)
Kalshi
Contract
Milwaukee wins by over 2.5 runs
Last price
21%
As of
Polled 2 min ago
Buy Yes
22¢
Sell Yes
21¢
$100 on Yes pays
$455 (4.55x)
Volume
$411
Trade this on Kalshi
O/U 9.5
20.5%
Polymarket 20.5%polled, 52s 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, 52s 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, 52s 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
Tampa Bay wins by over 1.5 runs
19%
Kalshi 19%polled, 2 min agoBest Yes 20¢ on Kalshi, $100 pays $500 (5.00x)
Kalshi
Contract
Tampa Bay wins by over 1.5 runs
Last price
19%
As of
Polled 2 min ago
Buy Yes
20¢
Sell Yes
19¢
$100 on Yes pays
$500 (5.00x)
Volume
$427
Trade this on Kalshi
1st 5 Innings O/U 6.5
15.5%
Polymarket 15.5%polled, 52s 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: Tampa Bay Rays (-2.5)
15.5%
Polymarket 15.5%polled, 52s agoBest Yes 17¢ on Polymarket, $100 pays $588 (5.88x)
Polymarket
Contract
Spread: Tampa Bay Rays (-2.5)
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, 52s agoBest Yes 14¢ on Polymarket, $100 pays $714 (7.14x)
Polymarket
Contract
Spread: Milwaukee Brewers (-4.5)
Last price
13%
As of
Polled just now
Buy Yes
14¢
Sell Yes
12¢
$100 on Yes pays
$714 (7.14x)
Trade this on Polymarket
Extra Innings
11.5%
Polymarket 11.5%polled, 52s agoBest Yes 13¢ on Polymarket, $100 pays $769 (7.69x)
Polymarket
Contract
Extra Innings
Last price
11.5%
As of
Polled just now
Buy Yes
13¢
Sell Yes
10¢
$100 on Yes pays
$769 (7.69x)
Trade this on Polymarket
Tampa Bay wins by over 2.5 runs
11.5%
Kalshi 11.5%polled, 2 min agoBest Yes 12¢ on Kalshi, $100 pays $833 (8.33x)
Kalshi
Contract
Tampa Bay wins by over 2.5 runs
Last price
11.5%
As of
Polled 2 min ago
Buy Yes
12¢
Sell Yes
11¢
$100 on Yes pays
$833 (8.33x)
Trade this on Kalshi
Spread: Tampa Bay Rays (-3.5)
10.5%
Polymarket 10.5%polled, 52s 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, 52s 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: 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 Spread". O/U 3.5 leads at 81%. Next is Milwaukee Brewers O/U 1.5 at 80.5%. $115K has traded across 39 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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