Rocket Classic First Round Leader Odds: A Wide-Open Board With Si Woo Kim On Top
The Quick Answer
Nobody on this board clears 4 cents by market price or panel blend. Eight AI models priced all 147 golfers in the Rocket Classic first round leader market on Kalshi, and the panel's top number is Si Woo Kim at about 3.2 cents against a 2.4-cent market mid, with Cameron Young and Xander Schauffele right behind. The panel expects another 63-or-64 low round at the newly converted par-70 Detroit Golf Club, and it expects a crowd at the top: roughly 1.9 co-leaders, which discounts every price on the board. The full model-by-model board, the market's five most overpriced names, and the sub-cent dark horses the panel refuses to zero out are below.
The Market
| Market | Rocket Classic: End of Round 1 Leader (Kalshi event KXPGAR1LEAD-ROC26 — 150 listed contracts against a confirmed 147-man tee sheet, so a few names on the exchange are not in Thursday's field) |
| Settles | On the official Round 1 leader, Thursday, July 30, 2026 |
| The Tie Rule | If N players share the lead, Yes pays $1/N (rounded down to the cent). This is the number that shapes the whole board; details in the settlement section below. |
| Venue | Kalshi, a CFTC-regulated event-contract exchange (18+; availability varies by state as of July 2026) |
| Panel Verdicts | Generated July 29, 2026, 2:21 PM ET, price-blind, with a revision round at 2:29 PM ET |
| Market Prices | As of July 29, 2026, 8:50 PM ET |
Settlement runs off the official Round 1 leaderboard, and the tie clause does the heavy lifting: Kalshi pays Yes holders $1/N when N players tie for the lead. Detroit's history says ties are the norm, not the exception: four of the last seven first rounds here ended with two or three players sharing the lead, and the panel's central estimate for this year is about 1.9 co-leaders. That means every price in this article is a tie-adjusted expected payout, not a raw probability of holding a share of the lead.
How The Tie Rule Prices The Board: A Worked Example
Take last year's actual result. Potgieter and Roy both shot 62, so a Yes contract on either of them paid $0.50, not $1.00. Now apply that to pricing: a golfer with a true 5% chance of at least sharing the lead is not worth 5 cents here. Solo-lead scenarios still pay the full dollar, so the panel's effective tie multiplier lands near 0.65-0.70 (one seat derived 0.69 from the historical 1.7 co-leaders), putting that golfer's fair value around 5 × 0.65 ≈ 3.3 cents. That 30-to-35 percent haircut applies to every name on the board, which is why the panel's top number in this article is 3.2 cents on a player it gives about a 5% chance to at least share the lead. To convert any cents price into implied probability and back, the EV calculator does the arithmetic for you. With 150 contracts, this is one of the deepest Kalshi golf markets running, and PGA first round leader odds move all day as tee times approach.
The Setup: Detroit Golf Club Just Lost Two Par-5S
Every prior PGA Tour round at Detroit Golf Club was played at par 72. This year the course plays as a par 70 at 7,328 yards: holes 7 and 17, formerly 552- and 577-yard par-5s, are now 505- and 537-yard par-4s. Only the 592-yard 4th and 561-yard 14th survive as par-5s.
That conversion was the single most-argued question inside the panel. The case that it matters: half of Detroit's par-5 scoring holes are simply gone, so the field has two fewer eagle-and-birdie holes to attack, which trims the extreme low tail of first-round scores and crowds more players onto the same leading number. The case that it barely matters: the same 18 holes are still there, the strokes required barely change, and to-par optics are cosmetic.
The seven-year ledger is the anchor either way. In strokes, not to-par, Detroit's first-round low has landed in a tight 62-to-65 window every single year:
| Year | R1 low (strokes) | Leaders | Within 1 shot |
|---|---|---|---|
| 2019 | 63 | Nate Lashley | 3 |
| 2020 | 65 | Redman, Kisner, Stallings (3-way tie) | 10 |
| 2021 | 63 | Davis Thompson | 1 |
| 2022 | 64 | Pendrith, Finau (tie) | 2 |
| 2023 | 64 | Kuest, Moore (tie) | 9 |
| 2024 | 64 | Akshay Bhatia | 3 |
| 2025 | 62 | Potgieter, Roy (tie) | 5 |
The panel's expected leading score sits at 63-64, with the seats that weight the par-70 conversion hardest at 64 and the strokes-ledger purists at 63.
Weather is a non-factor. The National Weather Service point forecast for Thursday at Detroit Golf Club: sunny all day, no rain chance, 5-6 mph northwest wind for the 7:00 AM wave building only to 8-9 mph north wind for the afternoon wave, temperatures from 61°F at first tee to 85°F mid-afternoon. A few seats gave morning starters a token edge for calm air and softer greens; the panel majority priced no wave premium at all.
The Board
Top of the market versus the panel's tie-adjusted blend, in cents. The blend is the equal-weight mean of all eight seats after the revision round. Market mids on this board carry meaningful spread (the sum of all 147 mids is about 116 cents against a board that must settle to 100; the de-vig haircut is already accounted for in every edge in this article), so small gaps are noise; the edges worth reading are the ones in the next two sections.
| Player | R1 tee (ET) | Market mid ¢ | AI blend ¢ |
|---|---|---|---|
| Si Woo Kim | 7:55 AM | 2.4 | 3.2 |
| Cameron Young | 12:54 PM | 3.6 | 3.2 |
| Xander Schauffele | 7:44 AM | 3.1 | 3.0 |
| Wyndham Clark | 7:33 AM | 2.7 | 2.9 |
| Chris Gotterup | 7:44 AM | 3.2 | 2.7 |
| Jackson Koivun | 7:33 AM | 2.7 | 2.4 |
| Akshay Bhatia | 7:55 AM | 1.9 | 2.2 |
| Ryan Gerard | 8:06 AM | 1.8 | 2.2 |
| Patrick Cantlay | 1:05 PM | 1.9 | 2.1 |
| Jake Knapp | 1:05 PM | 2.4 | 2.0 |
| Russell Henley | 12:43 PM | 1.7 | 1.9 |
| J.J. Spaun | 12:54 PM | 1.6 | 1.9 |
| Hideki Matsuyama | 12:43 PM | 1.9 | 1.8 |
| Rickie Fowler | 7:44 AM | 1.5 | 1.8 |
| Ben Griffin | 12:54 PM | 1.7 | 1.8 |
Every Seat's Number
The full panel on the top 15, in tie-adjusted cents. Eight seats: three Claude models plus GPT, Gemini, GLM, Kimi and DeepSeek. Seven seats revised after reading the others' anonymized reasoning; one seat's revision round did not complete, so its first-round number stands.
| Player | DeepSeek | Fable | Gemini | GLM | GPT | Kimi | Opus | Sonnet |
|---|---|---|---|---|---|---|---|---|
| Si Woo Kim | 2.7 | 3.3 | 3.8 | 5.0 | 2.8 | 2.2 | 2.2 | 3.6 |
| Cameron Young | 2.8 | 3.7 | 3.2 | 4.4 | 2.7 | 2.5 | 2.4 | 3.6 |
| Xander Schauffele | 2.8 | 3.4 | 3.1 | 4.4 | 2.5 | 2.3 | 2.1 | 3.3 |
| Wyndham Clark | 2.5 | 3.0 | 3.7 | 3.9 | 2.5 | 1.7 | 2.0 | 3.5 |
| Chris Gotterup | 2.6 | 3.1 | 3.0 | 3.5 | 2.6 | 1.6 | 2.2 | 3.4 |
| Jackson Koivun | 2.4 | 2.9 | 2.5 | 3.2 | 2.0 | 1.3 | 1.8 | 3.0 |
| Akshay Bhatia | 1.8 | 2.3 | 2.8 | 3.2 | 2.1 | 1.1 | 1.6 | 2.8 |
| Ryan Gerard | 2.1 | 2.4 | 2.3 | 3.0 | 2.1 | 1.2 | 1.6 | 2.7 |
| Patrick Cantlay | 2.3 | 2.6 | 2.1 | 2.4 | 2.2 | 0.9 | 1.5 | 2.7 |
| Jake Knapp | 1.8 | 2.3 | 2.2 | 2.1 | 2.2 | 0.9 | 1.5 | 2.9 |
| Russell Henley | 2.0 | 2.3 | 1.8 | 2.1 | 2.0 | 1.0 | 1.4 | 2.6 |
| J.J. Spaun | 2.0 | 2.2 | 1.8 | 2.1 | 1.8 | 1.0 | 1.4 | 2.6 |
| Hideki Matsuyama | 1.9 | 2.1 | 2.0 | 2.1 | 1.8 | 0.8 | 1.4 | 2.5 |
| Rickie Fowler | 1.6 | 1.9 | 2.0 | 2.7 | 1.8 | 0.8 | 1.3 | 2.2 |
| Ben Griffin | 1.9 | 2.1 | 1.6 | 2.1 | 1.7 | 0.9 | 1.3 | 2.5 |
Blend values are computed from full-precision seat numbers before rounding, so a blend can differ from the mean of the rounded cells by a tenth of a cent. Model estimates generated July 29, 2026, price-blind, from an eight-model panel. These are model estimates, not predictions of fact and not financial or trading advice. Models are frequently wrong; the market price reflects real traders' money.
Where The Panel Sits Above The Market
After de-vigging the market's 116-cent board back to a no-vig 100, the panel's biggest premiums over the market are, in order: Si Woo Kim (+1.2 cents over his normalized 2.0), Ryan Gerard (+0.6), Akshay Bhatia (+0.6), Wyndham Clark (+0.6), J.J. Spaun (+0.5), Rickie Fowler (+0.5) and Patrick Cantlay (+0.5).
The Si Woo Kim case is the panel's clearest thesis, and it is a birdie-rate argument. In a one-round race to the lowest score, all eight seats paid for volatility and birdie-making over four-round steadiness, and Kim's 4.58 birdies per round is the field's standout number. Every single seat priced him at or above his vig-adjusted 2.0 cents, which is rare on a board this flat.
"Within tiers I moved money toward birdie-rate and volatility profiles: Si Woo Kim (4.58 BIR/RND), Clark (4.47), Bhatia and Knapp (both course-proven low-round makers), Potgieter (led here with 62 last year, sd 12.0)." — Claude Fable
Bhatia led this event's first round outright in 2024, and Gerard (4.16 birdies per round, top ten in this field) and Fowler are the same trade at a cheaper entry: morning-wave players priced under 2 cents by a market that, on the panel's read, is paying too much respect to season-long form and not enough to one-round variance.
The Traps: Where The Market Is Paying Too Much
The other side of the normalization: the names where the market's number is furthest above the panel's. Ben James (market 1.2 normalized, panel 0.1), Kevin Roy (0.9 vs under 0.1), Emiliano Grillo (1.0 vs 0.2), Sam Stevens (0.8 vs 0.1) and Nico Echavarria (0.7 vs 0.1) are the five biggest.
Kevin Roy is the instructive one. He co-led this exact round a year ago at 62, and the market remembers. The panel mostly doesn't care: last year's co-lead came at the old par 72 with the two soft par-5s still on the card, and nothing in Roy's current birdie-rate or projection profile separates him from dozens of players the market prices near zero. One seat put it bluntly about names like these:
"D's 1.6c rest-of-field is indefensible: Lashley, Kuest, Redman and Roy all led here from outside any top-40 rank, which is why I hold 35.9c." — Claude Opus
That quote cuts both ways, and honestly: the same seat arguing Roy is overpriced individually is also arguing the market underprices the anonymous long tail as a group. Detroit's first-round leader has come from deep in the field in four of the last seven years, and after the panel's named boards are summed, its blend still leaves about 29 cents on the rest of the 147-man field (individual seats range from 10 to 37 cents). The market's visible tail is nowhere near that: its ten quotes under 0.7 cents add up to six cents, and 87 of the 150 contracts carry no quote at all.
Dark Horses The Panel Won't Dismiss
Per house rule, the longshots priced around a cent that at least one seat backed with a real number or a named reason:
- Séamus Power (7:11 AM, Market 0.8¢, Blend 1.1¢) — the largest relative premium on the board outside the top tier; four seats priced him at 1.2 cents or better.
- Pierceson Coody (8:28 AM, 1.0¢, Blend 1.2¢) — GPT named him directly in its birdie-rate upgrades, alongside Kevin Yu.
- Kevin Yu (7:55 AM, 1.0¢, Blend 1.2¢) — named by three seats for a 4.30 birdies-per-round profile; Fable and GPT both listed him as an off-projection add.
- Aldrich Potgieter (7:55 AM, 1.3¢, Blend 1.3¢) — not an edge at the mid, but the panel refuses to fade the man who shot 62 here a year ago, with a 12.0 simulation volatility against a field pinned near 11.5.
How The Panel Read The Round
The methodology in one paragraph: each model received the same fetched data card — the full Kalshi board and settlement rules, the ESPN field and tee sheet, the hole-by-hole course card with the par-70 conversion, the 2019-2025 first-round scoring ledger, the NWS hourly forecast, and Stokastic's Round 1 simulation projections for all 147 players — with market prices withheld. Each seat priced the entire field in one pass, with the requirement that the board sum to about 100 tie-adjusted cents; it is the same one-call partition method behind our Super Bowl champion board. Seven seats then read the other models' anonymized reasoning and could revise. Every number on this page is stored the moment it is generated and back-tested against the market's actual settlement; the panel's graded record is public, starting with the Correspondents' Dinner scorecard.
The revision round produced one real mind-change worth quoting. Opus came in treating the par conversion as cosmetic and left convinced it truncates the low tail, moving its expected leading score from 63 to 64:
"I had treated the par-70 conversion as to-par cosmetics only; [other seats] are right that the specific holes converted (494 and 537) [Editor's note: the converted holes are Nos. 7 and 17, now 505 and 537 yards; the surviving 561-yard 14th was comparably reachable at the old setup] were the REACHABLE par-5s, leaving only 592 and 561. Strokes taken barely change, but a 3-shot hole that scored -2 now scores -1, so the extreme left tail is truncated rather than shifted... when the low is set by how many players reach a common number rather than by who goes lowest, skill separation pays less." — Claude Opus
The panel's remaining split is honest and unresolved: the strokes-ledger seats (Fable, Sonnet, GPT) hold the leading score at 63 and keep more separation between tiers; the compression seats (Gemini, GLM, Kimi, DeepSeek, and post-revision Opus) sit at 64 with a flatter, more crowded board. Where you land on that question is worth about half a cent on every name in the top 15.
One data honesty note the panel flagged itself: Jackson Koivun, priced sixth on the blend, is the board's least certain number. His price rests almost entirely on simulation projections, with the thinnest season-stats profile in the top tier, and multiple seats named him as their single biggest uncertainty.
If you want the tournament-length view of this same field, the panel's full-week board is in our Rocket Classic winner Model Verdict, and the mechanics of how Kalshi golf boards settle are covered there as well. If you follow the sportsbook side of this tournament too, the live golf odds screen tracks prices at every major sportsbook, which is a useful sanity check against any single venue's number.
The Bottom Line
This is the flattest board the panel has priced this summer: no golfer clears 4 cents, the top 40 are separated by about two cents, and the tie rule shaves 30 to 40 percent off everyone's raw co-lead probability. The panel's conviction, such as it exists on a 147-player coin cascade, is concentrated in three places: Si Woo Kim and the birdie-rate profiles over the steady stars, the anonymous long tail over the mid-priced names the market remembers for old reasons, and a 63-or-64 leading score in perfect scoring weather either way.
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To be explicit: these are model estimates for information and entertainment, not financial advice and not a recommendation to trade any contract. Event contracts on Kalshi are CFTC-regulated and are not sports betting; they are for adults 18+ where legal, and availability varies by state as of July 2026. The models on this panel are graded against real settlements all summer and they are wrong regularly.
