Cowboys vs. Giants Week 1 Odds & Predictions
Prediction markets currently favor Dallas Cowboys at -154 odds, with an implied probability of 60.6%. New York Giants carries +156 odds, with an implied probability of 39.1%. John Harbaugh makes his Giants coaching debut with Malik Nabers’ opener status still unconfirmed despite his full practice on Sept. 2. This tracker compares live prices across Kalshi, Gemini, Polymarket US and Polymarket Global using volume-weighted average pricing, with prices refreshed hourly.
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Current Odds on Dallas vs. NYG matchup
Current probabilities across platforms with liquidity indicators
DCDallas Cowboys
Vol —
Spread 1.0%
Agg
60.6%↑ +0.1%
P
61.5%
K
60.5%
U
60.5%
G
60.5%
NYGNew York Giants
Vol —
Spread 1.5%
Agg
39.1%↓ -1.4%
U
40.0%
K
39.5%
G
39.5%
P
38.5%
| Outcome | Aggregated | Spread | Volume | Kalshi | Polymarket | Polymarket US | Gemini |
|---|---|---|---|---|---|---|---|
DC Dallas Cowboys | 60.6% ↑ +0.1% | 1.0% | — |
Kalshi
60.5%
|
Polymarket
61.5%
|
Polymarket US
60.5%
|
Gemini
60.5%
|
NYG New York Giants | 39.1% ↓ -1.4% | 1.5% | — |
Kalshi
39.5%
|
Polymarket
38.5%
|
Polymarket US
40.0%
|
Gemini
39.5%
|
Week 1 odds movement: Cowboys vs. Giants
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Tap "Chart settings" to adjust the chart.
Chart settings
Arbitrage Scanner
Current cross-venue opportunities with fee calculations
Pairs (Venue-to-Venue)
| Outcome | Venue Pair | Leg A (Buy) | Leg B (Sell) | Gross Spread | After Fees | Actionable | Trade Now |
|---|---|---|---|---|---|---|---|
NYG New York Giants |
Polymarket US
→
Polymarket | Buy @ U 40¢ | Sell @ P 61¢ | +21.00% | +21.00% |
Yes | |
DC Dallas Cowboys |
Polymarket US
→
Polymarket | Buy @ U 60.5¢ | Sell @ P 61¢ | +0.50% | +0.50% |
No |
Outcome Diff
| Outcome A | Outcome B | Venue | A Odds | B Odds | Diff | Strategy | Trade Now |
|---|---|---|---|---|---|---|---|
DC Dallas Cowboys |
NYG New York Giants |
Polymarket | A 61.5% | B 38.5% | +23.00% | Buy spread | |
DC Dallas Cowboys |
NYG New York Giants |
Kalshi | A 60.5% | B 39.5% | +21.00% | Buy spread | |
DC Dallas Cowboys |
NYG New York Giants |
Gemini | A 60.5% | B 39.5% | +21.00% | Buy spread | |
DC Dallas Cowboys |
NYG New York Giants |
Polymarket US | A 60.5% | B 40.0% | +20.50% | Buy spread |
After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.
Methodology & Data Mapping
How we aggregate, normalize, and map cross-platform data
Default: Volume-Weighted Average Price (VWAP)
Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.
Use the VWAP/Simple toggle above the chart to switch aggregation views.
Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).
Polymarket: Market data via their API (token prices + best bid/ask + 24H volume/liquidity when available).
Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).
Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).
Event data is updated hourly. Older history is downsampled.
Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.
Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.
Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).
Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.
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Polymarket Promo Code Rate: $50 Bonus for Cowboys vs. Giants SNF
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The Super Bowl favorite Rams and several other contenders are expected to battle for double digit wins, while others could have their work cut out to finish the season above .500.
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The league says contracts on player injuries, officiating, broadcast mentions and easily manipulated plays remain available months after its first warning. Its latest letter, sent days before the 2026 season begins, sharpens the pressure on Kalshi, Polymarket and other federally regulated exchanges, and notably calls their products “bets.”
NFL Week 1 Predictions: Daily Updates and Odds
Atlanta will start Cooper Rush after ruling out Tua Tagovailoa and Michael Penix Jr., while Pittsburgh moved from a 5.5-point to a 6.5-point favorite and the Falcons’ Kalshi win price fell two percentage points to 30%. Cowboys vs. Giants was Sunday’s most-traded matchup with $797,954 in Kalshi game composite volume as of 7:00 a.m. ET on Sept. 12. Among the weekend’s closest-priced game-winner markets, Bills vs. Texans had Buffalo at 52% and Houston at 48% on Kalshi.
