TOTAL VOLUME:

$134.1b

24H VOL:

$133,388,117

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,436,095,462

405,232

Markets across

30,526

events

MATCHED EVENTS:

2,693

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Tour
All
Sports
UFC Fight Night: Kamaru Usman vs. Dricus Du Plessis (Middleweight, Main Card)
polymarket
kalshi

Who will win Kamaru Usman vs. Dricus Du Plessis?

Volume:
$15,435,111

Dricus Du Plessis

 - Kalshi

Dricus Du Plessis - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jul 19, 2026

Closed: Jul 18, 11:14 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

Dricus Du Plessis

View
100%
Yes 100¢No 0¢
100¢
N/A
$5,536,871
N/A
N/A
$4,289,869
Settled
Yes
polymarket

Fight to Go the Distance?

100%
Yes 100¢No 0¢
0.1¢
N/A
$51,800
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 3.5 Rounds

100%
Yes 100¢No 0¢
0.1¢
N/A
$5,236
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 0.5 Rounds

100%
Yes 100¢No 0¢
0.1¢
N/A
$772
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 1.5 Rounds

100%
Yes 100¢No 0¢
0.1¢
N/A
$514
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 4.5 Rounds

100%
Yes 100¢No 0¢
0.1¢
N/A
$261
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 2.5 Rounds

100%
Yes 100¢No 0¢
0.1¢
N/A
$221
N/A
N/A
N/A
Settled
Yes
kalshi

Kamaru Usman

0%
Yes 0¢No 100¢
100¢
N/A
$7,407,378
N/A
N/A
$5,737,408
Settled
No
polymarket

Kamaru Usman vs. Dricus Du Plessis

0%
Yes 0¢No 100¢
—
N/A
$2,401,328
N/A
N/A
N/A
Settled
Yes
polymarket

Fight won by submission?

0%
Yes 0¢No 100¢
—
N/A
$12,004
N/A
N/A
N/A
Settled
No
polymarket

Du Plessis to win by KO/TKO?

0%
Yes 0¢No 100¢
—
N/A
$10,945
N/A
N/A
N/A
Settled
No
polymarket

Usman to win by KO/TKO?

0%
Yes 0¢No 100¢
—
N/A
$5,172
N/A
N/A
N/A
Settled
No
polymarket

Fight won by KO/TKO?

0%
Yes 0¢No 100¢
—
N/A
$2,610
N/A
N/A
N/A
Settled
No
Total markets: 13

Intro

This market tracks the outcome and fight dynamics of the UFC Fight Night matchup between Kamaru Usman and Dricus Du Plessis scheduled for July 18, 2026. The aggregated consensus across Polymarket and Kalshi shows 100.0% probability for the Over/Under 2.5 Rounds outcome, reflecting strong market agreement on fight duration expectations. Resolution will be determined by official UFC records. Watch the fight conclusion on July 18, 2026, to see whether the bout resolves above or below the 2.5-round threshold.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Polymarket defines outcome-specific markets with comprehensive edge-case handling (draws, No Contests, cancellations resolve 50-50), while Kalshi defines a single binary market that resolves Yes if either fighter wins, with no published guidance on edge cases or cancellations.Hero tip: Polymarket markets are suitable for directional bets on specific outcomes (winner, method, round duration); Kalshi's binary market is a simple "decisive result" bet. Confirm Kalshi's edge-case handling independently before settlement, as it is not published in the provided rules.

Critical divergence points:

  • Polymarket: 10 granular markets covering winner, method of victory (KO/TKO, submission, decision), and round duration thresholds (0.5, 1.5, 2.5, 3.5, 4.5 rounds). Each market explicitly resolves to 50-50 for draws, technical decisions, No Contests, or cancellations beyond August 1, 2026. Resolution source: Official UFC information.
  • Kalshi: Single binary market: resolves Yes if either Dricus Du Plessis or Kamaru Usman wins the fight originally scheduled for July 18, 2026. No published guidance on draws, No Contests, or cancellations. Resolution source not specified.
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 "Kamaru Usman" if Kamaru Usman is officially declared the winner of the fight against Dricus Du Plessis at UFC Fight Night: Du Plessis vs. Usman, scheduled for July 18, 2026. It will resolve to "Dricus Du Plessis" if Dricus Du Plessis 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 August 1, 2026, this market will resolve "50-50." The resolution source for this market will be official information from the UFC.

Kalshi

Resolution depends on the official fight outcome. If the fight is postponed or delayed, the market remains open and closes after the rescheduled bout concludes within two weeks. Ties or no-contests resolve at 50/50 for both fighters. If the fight is cancelled or rescheduled beyond two weeks, the market resolves to a fair price per standard rules.

Frequently asked questions

The Usman vs. Du Plessis fight market dashboard aggregates prediction market pricing across Polymarket and Kalshi, allowing traders to monitor real-time odds on multiple outcomes tied to this middleweight matchup. You can track consensus probability shifts, compare how each venue prices the same event, and view cumulative trading volume across both platforms. The dashboard surfaces the leading outcomes on each exchange, helping you identify where smart money is positioning ahead of the bout and spot pricing discrepancies that may signal arbitrage or shifting fighter sentiment.

Prediction markets and sportsbooks price fights differently because they operate under distinct mechanisms. Sportsbooks set odds to balance their book and manage risk, often incorporating sharp-money signals but ultimately controlling the line for profitability. Prediction markets, by contrast, derive prices from continuous trader supply and demand, reflecting aggregate belief without a house edge. This market typically shows tighter spreads and faster reaction to breaking news than traditional sportsbooks, though sportsbook lines can occasionally lead if they attract early professional action before prediction market traders react.

Fighter injury reports, training camp updates, and weigh-in results typically drive sharp repricing in the days leading up to fight night. Social media sentiment, analyst commentary, and betting action from known professional bettors can shift odds quickly. Late-breaking news such as corner changes, weight-cut complications, or fighter statements may trigger volatility. On fight night itself, early round performance, visible damage, and crowd reaction often cause rapid swings as traders reassess win probability in real time. Monitor official MMA media and fighter social accounts for catalysts that could reshape this market's trajectory.