Browns vs. Buccaneers Week 2 Odds & Predictions
Cleveland travels to Raymond James Stadium for a Week 2 matchup with Tampa Bay on Sunday, September 20 at 1 p.m. ET on CBS. The live consensus board places Tampa Bay at 77.5% implied probability (-344), with Cleveland at 23.5% (+325). DeFi Rate aggregates the Browns vs. Buccaneers full-game winner markets from Kalshi and Polymarket using volume-weighted pricing, while the venue columns show where odds, spreads and trading activity differ; data updates hourly.
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Current Browns vs. Buccaneers Odds: Tampa Bay Favorite to Win
Current probabilities across platforms with liquidity indicators
TBTampa Bay
Vol —
Spread 3.0%
Agg
77.5%↑ +8.0%
K
77.5%
U
77.5%
P
74.5%
CLCleveland
Vol —
Spread 2.0%
Agg
23.5%↓ -8.0%
P
25.5%
U
24.0%
K
23.5%
| Outcome | Aggregated | Spread | Volume | Kalshi | Polymarket | Polymarket US |
|---|---|---|---|---|---|---|
TB Tampa Bay | 77.5% ↑ +8.0% | 3.0% | — |
Kalshi
77.5%
|
Polymarket
74.5%
|
Polymarket US
77.5%
|
CL Cleveland | 23.5% ↓ -8.0% | 2.0% | — |
Kalshi
23.5%
|
Polymarket
25.5%
|
Polymarket US
24.0%
|
Week 2 line movement: Browns vs. Buccaneers
Hover for details · Cursor-synced tooltips
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 |
|---|---|---|---|---|---|---|---|
TB Tampa Bay |
Polymarket
→
Polymarket US | Buy @ P 27¢ | Sell @ U 76¢ | +49.00% | +49.00% |
Yes | |
CL Cleveland |
Polymarket US
→
Polymarket | Buy @ U 24¢ | Sell @ P 24¢ | +0.00% | +0.00% |
No |
Outcome Diff
| Outcome A | Outcome B | Venue | A Odds | B Odds | Diff | Strategy | Trade Now |
|---|---|---|---|---|---|---|---|
TB Tampa Bay |
CL Cleveland |
Kalshi | A 77.5% | B 23.5% | +54.00% | Buy spread | |
TB Tampa Bay |
CL Cleveland |
Polymarket US | A 77.5% | B 24.0% | +53.50% | Buy spread | |
TB Tampa Bay |
CL Cleveland |
Polymarket | A 74.5% | B 25.5% | +49.00% | 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).
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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