TOTAL VOLUME:

$134.2b

24H VOL:

$126,590,312

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,439,516,703

404,175

Markets across

30,277

events

MATCHED EVENTS:

2,685

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Insights
Indices
Tour
All
Trending
Breaking
New
Ending Soon
Politics
Sports
Crypto
Companies
Elections
Financials
Economics
Other
Entertainment
Science and Technology
UFC 331: Ozzy Diaz vs. Ryan Gandra (Middleweight, Early Prelims)
polymarket
kalshi

What is the result of Ozzy Diaz vs Ryan Gandra?

Volume:
$1,082,714

Ryan Gandra

 - Kalshi

Ryan Gandra - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 20, 2026

Closed: Sep 19, 7:44 PM EST

kalshi

Kalshi

View
Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Ryan Gandra

View
100%
Yes 100¢No 0¢
100¢
N/A
$448,612
N/A
N/A
$344,831
Settled
Yes
polymarket

Gandra to win by KO/TKO?

View
100%
30%
Yes 100¢No 0¢
0.1¢
N/A
$5,345
N/A
N/A
N/A
Settled
Yes
polymarket

Gandra in Round 1

View
100%
52%
Yes 100¢No 0¢
0.1¢
N/A
$2,738
N/A
N/A
N/A
Settled
Yes
polymarket

Ends before Round 2?

View
100%
44%
Yes 100¢No 0¢
0.1¢
N/A
$1,007
N/A
N/A
N/A
Settled
Yes
polymarket

Fight won by KO/TKO?

View
100%
25%
Yes 100¢No 0¢
0.1¢
N/A
$7
N/A
N/A
N/A
Settled
Yes
kalshi

Osman Diaz

View
0%
19%
Yes 0¢No 100¢
100¢
N/A
$426,046
N/A
N/A
$398,609
Settled
No
polymarket

Ozzy Diaz vs. Ryan Gandra

View
0%
18%
Yes 0¢No 100¢
—
N/A
$120,149
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 1.5 Rounds

View
0%
32%
Yes 0¢No 100¢
—
N/A
$56,778
N/A
N/A
N/A
Settled
Yes
polymarket

Fight to Go the Distance?

View
0%
13%
Yes 0¢No 100¢
—
N/A
$20,035
N/A
N/A
N/A
Settled
No
polymarket

O/U 0.5 Rounds

View
0%
Yes 0¢No 100¢
—
N/A
$960
N/A
N/A
N/A
Settled
Yes
polymarket

Diaz to win by KO/TKO?

View
0%
9%
Yes 0¢No 100¢
—
N/A
$661
N/A
N/A
N/A
Settled
No
polymarket

Fight won by submission?

View
0%
8%
Yes 0¢No 100¢
—
N/A
$136
N/A
N/A
N/A
Settled
No
polymarket

Gandra in Round 2

View
0%
6%
Yes 0¢No 100¢
—
N/A
$119
N/A
N/A
N/A
Settled
No
polymarket

Gandra in Round 3

View
0%
Yes 0¢No 100¢
—
N/A
$110
N/A
N/A
N/A
Settled
No
polymarket

O/U 2.5 Rounds

View
0%
Yes 0¢No 100¢
—
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

Diaz in Round 3

View
0%
Yes 0¢No 100¢
—
N/A
$5
N/A
N/A
N/A
Settled
No
polymarket

Fight won by decision?

View
0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Ends before Round 3?

View
100%
20%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Diaz in Round 1

View
0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Diaz in Round 2

View
0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Decision or Draw

View
0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
Total markets: 21

Description

This group covers various markets related to the UFC 331 middleweight fight between Ozzy Diaz and Ryan Gandra, scheduled for September 19, 2026. Markets include who will win, how they will win (KO, submission, decision), round-based outcomes, and whether the fight will go the distance.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Slight divergence in winner resolution criteria; Polymarket specifies 'officially declared', while Kalshi simply requires a win.Hero tip: Favor Kalshi markets for winner predictions due to the simpler resolution criteria. Be aware of potential post-fight contestations when trading on Polymarket.

Critical divergence points:

  • Polymarket: Resolves to 'Ozzy Diaz' or 'Ryan Gandra' if that fighter is officially declared the winner. Resolves '50-50' for draws, no contests, cancellations, or postponements beyond October 3, 2026. Key Quote: 'This market will resolve to "Ozzy Diaz" if Ozzy Diaz is officially declared the winner...'
  • Kalshi: Resolves 'Yes' if either fighter wins the fight. Key Quote: 'If Ryan Gandra wins...then the market resolves to Yes. If Osman Diaz wins...then the market resolves to Yes.'
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

This market will resolve to "Ozzy Diaz" if Ozzy Diaz is officially declared the winner of the fight against Ryan Gandra at UFC 331: Van vs. Pantoja 2, scheduled for September 19, 2026. It will resolve to "Ryan Gandra" if Ryan Gandra is officially declared the winner. If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond October 3, 2026, this market will resolve "50-50." The resolution source for this market will be official information from the UFC.

Kalshi

If Ryan Gandra wins the Gandra vs Diaz professional MMA fight originally scheduled for Sep 19, 2026, then the market resolves to Yes. If Osman Diaz wins the Gandra vs Diaz professional MMA fight originally scheduled for Sep 19, 2026, then the market resolves to Yes.