49ers vs Raiders Preseason Prediction Market Odds, August 27, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
49ers | +1.5 — | O 56.5 — | 100%100% | 100% Kalshi |
Raiders | -1.5 — | U 56.5 — | 0% | — |
| Spread | Total | Moneyline | Best ML | |
|---|---|---|---|---|
San Francisco 49ers | +1.5 — | O 56.5 — | 100%100% | 100% Kalshi |
Las Vegas Raiders | -1.5 — | U 56.5 — | 0% | — |
Las Vegas is the 61c moneyline favorite for the preseason finale (61c Kalshi, 62c Polymarket) after a seven-cent step up off 54c on Tuesday, and that number tells you less about these two rosters than any line on the calendar. Both teams are 1-1 in exhibition play, both play this game in the last week before the league-wide cut to 53 players, and neither Kirk Cousins nor Brock Purdy leads his team in preseason passing yards. The board carries about $254K in lifetime volume across the moneyline, spread and total, and the live board above has the current prices.
San Francisco visits Las Vegas at 8:00 PM ET on Thursday, August 27, 2026, inside Allegiant Stadium, and it is the last exhibition game on either schedule before the league-wide reduction to 53 players. Las Vegas is the 61c moneyline favorite on Kalshi and 62c on Polymarket, with San Francisco at 40c and 39c. Both teams are 1-1 this preseason. Every number on this board carries one caveat: the participation list, not the depth of the roster, decides a preseason finale, and neither team has released one yet.
49ers vs Raiders Preseason Market Context
The 49ers vs Raiders preseason moneyline moved in a single step. Kalshi held Las Vegas at 54c from Tuesday midday through roughly 3:30 PM ET, repriced to 60c and then 61c inside twenty minutes, and has not left 61c since. Polymarket walked the same path, 55c on Tuesday to 62c on Wednesday morning. San Francisco went the other way over the same stretch, 47c down to 40c on Kalshi. The snapshot series on this board reaches back about 24 hours, so that is the window the move belongs to and nothing further should be read into it.
Depth behind the two prices is lopsided even though the prices agree. The Kalshi San Francisco moneyline leg carries roughly $164K in lifetime volume and the Kalshi Las Vegas leg roughly $32K, while the Polymarket moneyline pair has traded about $6.6K lifetime. The full board, moneyline plus spread plus total, sits near $254K. A 1c difference between the two venues is not a signal when one side of it is a thin book. It is two exchanges landing in the same place with very different amounts of money standing behind the number.
Who dresses is the real question, and it is the one the market cannot see yet. Kirk Cousins is the listed QB1 in Las Vegas with rookie Fernando Mendoza second and Aidan O'Connell third. Brock Purdy is the listed QB1 in San Francisco with Mac Jones second and Kurtis Rourke third. Neither listed starter leads his own team in preseason passing yards. O'Connell paces Las Vegas at 15 of 24 for 166 yards, and Mac Jones paces San Francisco at 6 of 13 for 89 yards. Snaps in a final preseason week go to the players fighting for the last spots on a 53-man roster, and nothing on either depth chart or injury report points the other way for Thursday. A team that is better on paper can be the underdog on the field purely on who is in uniform, and that is the structural reason to hold a preseason price loosely.
Form exists but it is thin, and it cuts both ways. Las Vegas lost 27-14 to Arizona on August 13 and won 22-20 at Houston on August 20. San Francisco lost 19-13 to Tennessee on August 13 and then hung 41 points on the Chargers in a 41-17 road win on August 20. That 41-point outing is the loudest line on either resume and the least transferable one, because the personnel that produced it is not the personnel that opens the regular season. Availability is the more useful list. Las Vegas has Ashton Jeanty questionable with an ankle sprain, Dont'e Thornton Jr. questionable, and Buddy Johnson questionable with a shoulder, with Chigozie Anusiem and Justin Pickett on injured reserve. San Francisco has Kurtis Rourke questionable with a rib injury alongside Robert Jones (calf), Upton Stout (hip), Jacob Cowing (groin) and Mike Evans (groin). Rourke is the name that matters most for snap distribution, because he is the third quarterback on a night the third quarterback normally plays a half.
The derivative markets are tighter and more informative than the moneyline. The Kalshi spread ladder prices Las Vegas -1.5 at 57c, -2.5 at 54c and -3.5 at 47c, so it crosses even money between two and a half and three and a half points, which lines up with the DraftKings number of Las Vegas -3.5. The total is a genuine coin flip: 37.5 prices at 51c on Kalshi and 49c on Polymarket, with 38.5 at 49c and 47c. A total in the high thirties is the market pricing backups, shortened possessions and conservative play calling, not the two offenses that combined for 63 points across last week's games. Allegiant Stadium is enclosed, so the 109F Las Vegas forecast does not reach the field and weather is not an input on the total.
When the 49ers vs Raiders Preseason Market Resolves
The market resolves on the final score of the preseason game at Allegiant Stadium on Thursday, August 27, 2026, with kickoff at 8:00 PM ET. The moneyline pays out on the team that wins the game, the spread contracts settle on the final margin, and the total contracts settle on combined points scored. Kalshi and Polymarket both settle from the official NFL final score, typically within hours of the last whistle. If the game is postponed past the scheduled date or is not played, the contracts fall to each platform's cancellation and void rules rather than to a result.
Key 49ers vs Raiders Preseason Catalysts
Participation list: Neither team has published who plays, and on a preseason finale that single list is worth more than every other input on the board combined.
Quarterback rotation: Cousins and Purdy are the listed QB1s, but O'Connell (166 preseason passing yards) and Mac Jones (89) lead their teams, and Rourke being questionable with ribs changes how San Francisco splits the second half.
Roster-bubble motivation: This is the last audition before the cut to 53, so effort and snap counts skew toward players with no secure roster spot, which is not a factor that shows up in team quality.
Cross-platform depth gap: Kalshi holds roughly $164K lifetime on the San Francisco leg against about $6.6K on the Polymarket moneyline pair, so the two books agree at very different levels of conviction.
Spread ladder crossover: Kalshi crosses even money between Las Vegas -2.5 (54c) and -3.5 (47c), matching the sportsbook line of Las Vegas -3.5.
Total in the high thirties: 37.5 sits at 51c on Kalshi and 49c on Polymarket inside an enclosed stadium, which removes weather and leaves the total entirely about personnel and pace.
Related 49ers vs Raiders and NFL Markets
Preseason results do not carry into the regular season, so the season-long boards below are context for these two rosters rather than anything Thursday's outcome moves. The Las Vegas Raiders 2026 win total and the San Francisco 49ers 2026 win total price full-season expectations that will be set by the 17 games that count, not by an exhibition. The same applies to Las Vegas playoff odds, the 2026 AFC West market and the 2026 NFC West market. For the rest of the slate and both team boards, see the NFL prediction market hub, the Las Vegas Raiders hub and the San Francisco 49ers hub.
Resolution Criteria
Resolves on the result of the San Francisco 49ers at Las Vegas Raiders preseason game at Allegiant Stadium on Thursday, August 27, 2026, kickoff 8:00 PM ET. Moneyline contracts pay $1 per share on the team that wins the game and $0 on the other side. Spread contracts settle on the final margin of victory and total contracts settle on combined points scored by both teams, including any overtime played. Kalshi and Polymarket both settle from the official NFL final score, generally within hours of the final whistle. If the game is postponed beyond the scheduled date, canceled, or abandoned before it becomes official, the contracts resolve under each platform's cancellation and void rules rather than to a game result.
Key Factors
- Participation list not yet published, and on a preseason finale it outweighs every other input on the board
- Cousins and Purdy are the listed QB1s, but O'Connell (166 preseason passing yards) and Mac Jones (89) lead their teams
- Kurtis Rourke questionable with a rib injury, which changes how San Francisco splits second-half snaps
- Ashton Jeanty questionable with an ankle sprain, plus Thornton Jr. and Buddy Johnson questionable for Las Vegas
- Kalshi holds about $164K lifetime on the San Francisco leg against about $6.6K on the Polymarket moneyline pair
- Kalshi spread ladder crosses even money between Las Vegas -2.5 (54c) and -3.5 (47c), matching the sportsbook line
What are the current 49ers vs Raiders preseason odds?
As of Wednesday, August 26, 2026, Las Vegas trades at 61c on Kalshi and 62c on Polymarket, with San Francisco at 40c and 39c. Las Vegas opened this cycle at 54c on Kalshi and moved up 7c on Tuesday afternoon.
When does the 49ers vs Raiders preseason market resolve?
It resolves on the final score of the game at Allegiant Stadium on Thursday, August 27, 2026, with kickoff at 8:00 PM ET. Both platforms typically settle within hours of the final whistle.
Where can I trade the 49ers vs Raiders preseason market?
Kalshi and Polymarket both list this game. Kalshi carries the depth, with roughly $164K in lifetime volume on the San Francisco moneyline leg against about $6.6K on the Polymarket moneyline pair, and the full board sits near $254K.
Who is favored in 49ers vs Raiders and by what implied probability?
Las Vegas is favored at an average of about 61c, an implied probability near 61%. The Kalshi spread ladder crosses even money between Las Vegas -2.5 (54c) and -3.5 (47c), which matches the DraftKings line of Las Vegas -3.5.
Does this preseason game affect the 49ers or Raiders season markets?
No. Preseason results do not carry into the 17-game regular season, and the win-total, playoff and division boards for both teams price a roster that is not the one playing most of Thursday night. Treat those markets as separate context.
What should I watch before the 49ers vs Raiders market resolves?
The participation list, which lands roughly 90 minutes before the 8:00 PM ET kickoff. It is the single biggest price input on a final-week preseason game, because starters who sit turn a paper favorite into a coin flip.