Arizona Diamondbacks @ San Francisco Giants Prediction
MLB · May 27, 2026 · Lakeshore Edge calibrated model + Polymarket cross-check.
Only 0.5% edge at FanDuel — within the noise of de-vigging error.
Why the model leans this way
The model's base read on Arizona Diamondbacks starts at Elo, where a 48-point advantage maps to a 53% baseline win probability. Recent form across the last 10 games shifted that to 56% after blending the team's last-10 record into the rating. Home-field constant adjusted by +2400.0pp.
Tonight's probable starter for Arizona Diamondbacks is Eduardo Rodriguez (ERA 2.24). They face Tyler Mahle on the other side (ERA 6.1). Net pitching matchup is favorable by 2.4pp before bullpen and weather adjustments. Weather: 61F, 18mph @ 305deg. Line-movement signal: line drift -3.2%.
Multi-book consensus across FanDuel, DraftKings, BetMGM, and Pinnacle prices Arizona Diamondbacks at 50.9% — broadly in line with FanDuel's read. Pinnacle (the sharp-book reference, ~2% vig) has Arizona Diamondbacks at 50.2%. Polymarket's real-money pool reads 49.5%.
How the model got here
Each row is a stage in the probability calculation. The bar is the probability at that stage; the delta on the right is the shift from the previous stage.
What other markets think
Implied probability of Arizona Diamondbacks across the books and prediction markets we track, alongside the Lakeshore Edge model's own number.
| Source | Implied % | Note |
|---|---|---|
| FanDuel | 51.5% | Execution book (this is the price you'd take). |
| DraftKings | 51.3% | Cross-book check. |
| BetMGM | 51.3% | Cross-book check. |
| Pinnacle | 50.2% | Sharp-book reference (~2% vig). |
| Polymarket | 49.5% | Real-money prediction-market pool. |
| Kalshi | 52.5% | CFTC-regulated event market. |
| Lakeshore Edge model | 52.1% | Edge vs FanDuel: +0.5pt. |
Frequently asked
What's the model's edge on Arizona Diamondbacks @ San Francisco Giants?
The Lakeshore Edge model rates Arizona Diamondbacks at 52% to win or cover, versus FanDuel's implied 49% — a marginal edge of +0.5pt. That gap is what the model flags as a potential bet; the model has averaged +4.2pt CLV across 145 graded singles, meaning prices it picks tend to drift in the bettor's favor before close.
How likely is Arizona Diamondbacks to win according to the model?
52% by the Lakeshore Edge model. Pinnacle, the industry's sharpest book at ~2% vig, has them at 50.2%; Polymarket's real-money traders price the same outcome at 49.5%. The model blends Elo, recent form, sport-specific factors (pitching, injuries, weather), and live line movement to land on that number.
What's closing-line value (CLV) and why does it matter?
Closing-line value is how much your entry price beats the market's closing price on the same bet. If you pick a side at FanDuel -130 and the line closes at -150, the line moved 4pp toward your side after you locked in — that's positive CLV. CLV is the leading indicator of long-run profit because it's the metric that survives variance: a sustained positive CLV means you're consistently getting a better price than the consensus market settles on. Lakeshore Edge averages +4.2pt CLV on 145 graded singles, beating the close on 88% of them.
Sports betting involves risk. Past model performance is no guarantee of future results. If gambling is a problem for you, call 1-800-GAMBLER (US) or visit ncpgambling.org for help.