Cameron Boozer leads the No. 1-seeded Duke Blue Devils against an upstart St. John's Red Storm team looking to continue its Cinderella run in what could be a dynamic Sweet 16 encounter Friday night.
Thanks to the emergence of prediction markets like Kalshi, basketball fans in every state (aside from Nevada) can now invest in outcomes relating to Friday's St. John's vs. Duke predictions. Read on for our advice on how to nail your March Madness picks.
St. John's vs Duke predictions
| Result (Price) | |
|---|---|
| Duke ML (¢72) | Trade at Kalshi |
| St. John's +6.5 (¢51) | Trade at Kalshi |
| Under 142.5 (¢53) | Trade at Kalshi |
| Duke first to 10 points (¢59) | Trade at Kalshi |

Who will win St. John's vs Duke at prediction markets?
The Duke Blue Devils sit at 72 cents to win — 72% implied probability or -163 — while you can get the St. John's Red Storm at 29 cents (28%, +245).
Our prediction: Duke
Senior Covers basketball analyst Jason Logan likes the comfortably favored Blue Devils to advance. According to Logan, "When the smoke settles in the nation’s capital, the Blue Devils will be left standing. Duke has more ways to win than the Red Storm and can match their toughness, size, and athleticism."
Check out Jason's complete analysis in his St. John's vs. Duke predictions.
Start trading with Kalshi today!
Sign up now using our exclusive Kalshi promo code 'COVERS' and get a $10 trading bonus after you trade $10 on any other event contracts — including St. John's vs. Duke!
*Eligible to ALL states + DC, (excluding Nevada)
St. John's vs Duke props at prediction markets
Beyond just deciding on which team will win, several other March Madness odds markets are available to players for St. John's vs Duke at Kalshi, including the spread, total, and the first team to 10 points.
You can buy either side of a market — for example, "Yes" on the Duke -6.5 spread means the Blue Devils will cover, while "No" on Duke means the Red Storm will cover — with each side priced based on the implied probability (which can be converted to American, Decimal, or Fraction odds using the Covers odds converter.)
St. John's vs Duke spread and total at prediction markets
| Outcome | Yes | No |
|---|---|---|
| Duke -6.5 | 50¢ (+100) | 51¢ (-104) |
| Over 142.5 | 48¢ (+108) | 53¢ (-113) |
Our predictions: St. John's +6.5 and Under 142.5
Kalshi allows traders to access a wide range of potential outcomes involving either the spread or the total. Alt spreads range from Duke -21.5 to St. John's -9.5. As for the total, you can go from 127.5 to 157.5.
Other SJU/Duke props available at Kalshi include:
- Race to 10 points
- First half winner/spread/total
- Announcer mention markets
What is Kalshi and how does it work?
Kalshi is a federally regulated U.S. exchange where you trade directly on the outcome of real-world future events. Instead of traditional bets, you trade "Event Contracts" which are simple Yes/No questions like "Will the Houston Cougars reach the NCAA semifinals?" These events are priced between $0.01 and $0.99, and the prices reflect the market’s estimated probability of that event occurring. For instance, $0.55 equals a 55% chance. If your prediction is correct, the contract pays out exactly $1.00; if not, it settles at $0. Kalshi is essentially a stock market for reality.
How does Kalshi differ from sportsbooks?
In a sportsbook, you bet against the bookmaker, who sets fixed odds and takes a "vig," which is a kind of commission. On Kalshi, you trade against other users. This peer-to-peer model means prices are driven by supply and demand, often resulting in fairer odds. Additionally, because these are financial derivatives, you can exit your position early. If your team takes a 14-point lead, the contract price will rise, allowing you to sell your "Yes" shares for a profit before the final whistle even blows.
Why should I wager on St. John's vs Duke at Kalshi?
Kalshi offers four unique advantages over traditional sportsbooks:
- Flexibility: Unlike a "locked-in" bet, you can sell your contract at any time.
- Transparency: You trade against other users, which can allow you to find better value.
- Federal regulation: As a CFTC-regulated exchange, your funds are held in a secure, transparent environment.
- Availability: Kalshi is available in many regions where traditional sportsbooks aren't yet legal.






