The Kalshi referral code ROCKY is live for new users through the weekend of the 154th Open Championship, and after a Round 1 that turned the board upside down at Royal Birkdale, there is plenty left to trade. Register on Kalshi with the referral code ROCKY, place a $10 trade, and a $10 Kalshi sign-up bonus is credited on top — giving you $20 in trading power on a CFTC-regulated prediction market with three rounds still to play.
The prediction markets opened the 154th Open Championship with Scottie Scheffler and Rory McIlroy at the top of the board — and one round into Royal Birkdale, neither is anywhere near the lead. American Jackson Suber, a name that did not appear on a single pre-tournament market, shot 5-under to lead outright, with Sungjae Im and England’s Daniel Brown a shot back at -4 and a nine-man logjam at -3. For traders who want a position on a tournament the market clearly misjudged, the Kalshi referral code ROCKY is live for new users: register on Kalshi with the referral code ROCKY, place a $10 trade, and a $10 Kalshi sign-up bonus is credited on top.
How to Use the Kalshi Referral Code ROCKY:
Activating the Kalshi referral code ROCKY takes under five minutes — well before Round 2 gets going Friday:
- Open Kalshi.com or download the Kalshi app.
- Select Sign Up and enter the Kalshi referral code ROCKY in the referral/promo code field during registration.
- Complete identity verification — standard for all new Kalshi accounts.
- Place your first trade of $10 or more to trigger the $10 Kalshi sign-up bonus.
- Your bonus is credited after the qualifying trade and is live across every open Kalshi market — The Open outright winner, other golf contracts, plus Kalshi’s NBA, politics, and economics markets.
Note: The Kalshi referral code ROCKY must be entered at registration. It cannot be applied to an account that already exists, and the sign-up bonus is limited to one per new user.
Kalshi Referral Code ROCKY: Offer Details
- Kalshi sign-up bonus: $10 in trading funds
- Trigger: First trade of $10 or more
- Referral code: ROCKY
- Eligibility: New Kalshi accounts only; one bonus per user
- Bonus activation: Credited after the qualifying first trade
- Active as of: Thursday, July 16th, 2026 — after Round 1 of The Open Championship, with three rounds still to play
- Market access: All active Kalshi prediction markets — golf, MLB and other sports, politics, economics, finance, global events
- Terms: Subject to Kalshi’s current terms and conditions at Kalshi.com
The Open Championship: Round 1 Leaderboard (Royal Birkdale)
Round 1 is complete. Scores shown are to par after 18 holes:
| Pos | Player | Country | To par (R1) |
|---|---|---|---|
| 1 | Jackson Suber | USA | -5 |
| T2 | Sungjae Im | South Korea | -4 |
| T2 | Daniel Brown | England | -4 |
| T4 | Thomas Detry | Belgium | -3 |
| T4 | Robert MacIntyre | Scotland | -3 |
| T4 | Francesco Molinari | Italy | -3 |
| T4 | Alex Smalley | USA | -3 |
| T4 | Bryson DeChambeau | USA | -3 |
| T4 | Ryan Gerard | USA | -3 |
| T4 | MJ Daffue | South Africa | -3 |
| T4 | Pierceson Coody | USA | -3 |
| T4 | Cameron Young | USA | -3 |
| T13 | Henrik Stenson | Sweden | -2 |
| T13 | Jordan Smith | England | -2 |
| T13 | Victor Perez | France | -2 |
| T13 | Joakim Lagergren | Sweden | -2 |
Round 1 leaderboard as of the close of Thursday’s play, July 16th, 2026. Round 2 begins Friday.
Pre-Tournament Odds vs. Reality: What the Prediction Markets Missed
Here is how Polymarket and Kalshi priced the outright winner before Round 1. Prices are in cents; each is roughly equal to the market-implied probability (12¢ ≈ 12%). Polymarket’s figures are Buy Yes prices from its outright winner market, the most heavily traded Open market on either platform:
Outright Winner — Pre-Tournament Polymarket vs. Kalshi (price ≈ implied probability)
| Player | Polymarket (Buy Yes) | Kalshi (Yes) | Through R1 |
|---|---|---|---|
| Scottie Scheffler | 12¢ | 12¢ | Off the pace |
| Rory McIlroy | 9¢ | 7.9¢ | Off the pace |
| Tommy Fleetwood | 6.0¢ | 5.5¢ | Off the pace |
| Matt Fitzpatrick | 5.8¢ | 5.7¢ | Off the pace |
| Jon Rahm | 3.9¢ | 3.8¢ | Off the pace |
| Viktor Hovland | 3.3¢ | 3.1¢ | Off the pace |
| Robert MacIntyre | 3.0¢ | 2.9¢ | T4, -3 |
| Xander Schauffele | 2.7¢ | 3.0¢ | Off the pace |
| Wyndham Clark | 2.7¢ | 2.6¢ | Off the pace |
| Chris Gotterup | 2.7¢ | 2.7¢ | Off the pace |
| Collin Morikawa | 2.6¢ | 2.7¢ | Off the pace |
| Cameron Young | 2.3¢ | 2.1¢ | T4, -3 |
| Justin Rose | 2.2¢ | 2.3¢ | Off the pace |
| Si Woo Kim | 2.2¢ | — | Off the pace |
| Tyrrell Hatton | 2.1¢ | 2.2¢ | Off the pace |
Pre-tournament prices are as of the morning of Thursday, July 16th, 2026. “Off the pace” indicates a player outside the top group shown on the Round 1 leaderboard above. “—” means a player was not listed among the top contracts on that market’s board.
The counterpoint writes itself. Of the fifteen names the prediction markets had at the top of the board, only two — Scotland’s Robert MacIntyre and Cameron Young — sit inside the Round 1 leading group, both at -3. Bryson DeChambeau, who traded further down the pre-tournament board, is the other recognizable market name in the -3 cluster. The rest of the market’s favorites — Scheffler at 12¢, McIlroy at 9¢, the English pair of Fleetwood and Fitzpatrick on the second line — have work to do just to reach the names in red.
And the man in front, Jackson Suber, was not a tradeable favorite on either platform before the week began. That gap between the pre-tournament price and the Thursday-night reality is the whole case for trading a major on a live market: the board that mattered on Wednesday looks nothing like the board after 18 holes, and it will move again on Friday. MacIntyre’s home-nations run is the sort of story a prediction market re-prices in real time — a contract that opened at 3¢ looks very different with the Scot inside the top five and a partisan Birkdale crowd behind him.
Trade the updated Open Championship market on Kalshi with referral code ROCKY.
What Is Kalshi? The Kalshi Prediction Market, Explained
Kalshi is a CFTC-regulated prediction market exchange — the first federally licensed prediction market in the United States. It is not a sportsbook. On Kalshi you do not trade against a house that sets the line; you buy and sell contracts against other traders on a regulated exchange, at prices the order book sets.
Each Kalshi contract is priced between 1¢ and 99¢ and settles at $1 if the outcome happens or $0 if it doesn’t. A contract trading at 12¢ implies a 12% market probability. Because you can sell a position back to the market at any time before the event resolves, a Kalshi contract behaves more like a tradeable financial instrument than a fixed wager — if a contender shortens over the weekend, you can close out for a profit without waiting for Sunday’s final putt. Kalshi’s sports contracts are supported by federal court rulings but remain the subject of active litigation, which is worth knowing before you fund an account.
Kalshi odds are simply those live contract prices. They update continuously as new orders hit the exchange, which is why a round like Thursday’s — an outsider in front, most of the favorites off the pace — reshapes the entire board.
“Kalshi Betting” vs. Trading The Open: Why the Distinction Matters
Plenty of golf fans will search “Kalshi betting” this weekend, and the instinct is understandable — putting money on who wins The Open sounds like sports betting. But Kalshi is structured differently, and that difference matters most on a week like this one.
On a sportsbook you bet against the house at a line the book has set, with its margin built in. On Kalshi you trade a contract against another user at a price the exchange discovers, with no house on the other side and no line to beat — just a small transaction fee. When MacIntyre’s contract jumps on the back of a -3 opening round, you can trade into or out of that move Friday rather than being locked into a pre-tournament outright. That optionality — enter, exit, and re-enter as the leaderboard turns over the final three rounds — is the practical reason traders reach for a prediction market like Kalshi.
Kalshi Referral Code ROCKY vs. a Polymarket Referral Code: Two Ways to Trade The Open
Kalshi is not the only prediction market with an active Open Championship board — Polymarket, whose Buy Yes prices are in the table above, runs the most heavily traded outright winner market of the week. So how should a new trader think about a Kalshi referral code versus a Polymarket referral code?
| Kalshi | Polymarket | |
|---|---|---|
| Code type | Referral code | Referral / invite code |
| Platform | CFTC-regulated exchange | Peer-to-peer prediction market (CFTC-regulated DCM) |
| Odds mechanism | Limit-order book | Continuous peer-to-peer trading |
| The Open market depth | Solid US liquidity | Highest overall volume |
| Also trades | Golf, NBA, politics, economics | Golf, politics, crypto, global events |
| Exit before settlement | Yes | Yes |
The Polymarket vs. Kalshi choice comes down to structure rather than the tournament itself: Kalshi’s limit-order exchange suits traders who want to name their entry price and hold a regulated contract, while Polymarket’s peer-to-peer market carries the deeper Open Championship liquidity. They are not mutually exclusive — many traders keep an account on each. This article covers the Kalshi side; the Kalshi referral code ROCKY is the entry point, with a $10 sign-up bonus on your first $10 trade.
Bottom Line: Kalshi Referral Code ROCKY Is Live with Three Rounds to Play
Round 1 of the 154th Open Championship turned the pre-tournament board on its head — an outsider leads at Royal Birkdale, the favorites are chasing, and the market has three days left to sort it out. That is the week a live, tradeable market earns its keep. Register with the Kalshi referral code ROCKY, trade $10, and your $10 Kalshi sign-up bonus lands on top, giving you $20 in trading power on a CFTC-regulated exchange for the rest of the tournament.
Prices are moving fast after Thursday. The sharpest positioning tends to happen before the leaderboard settles — and after Round 1, it is anything but settled.
Get started with the Kalshi referral code ROCKY here.
Must be 18 years or older and have a legal, U.S. residential address within the applicable state, D.C., or U.S. territories. Not available in AZ, IL, MA, MD, MI, MT, NJ, and OH.
