Chicago Cubs @ Pittsburgh Pirates Prediction
MLB · May 27, 2026 · Lakeshore Edge calibrated model + Polymarket cross-check.
At FanDuel (1.96) the bet is negative-EV. FanDuel has the best price across the books we track — it's still negative-EV.
Why the model leans this way
The model's base read on Chicago Cubs starts at Elo, where a 28-point advantage maps to a 51% baseline win probability. Recent form across the last 10 games shifted that to 53% after blending the team's last-10 record into the rating. Home-field constant adjusted by +2400.0pp.
They face Braxton Ashcraft on the other side (ERA 2.89). Net pitching matchup is unfavorable by 0.8pp before bullpen and weather adjustments. Weather: 83F, 6mph @ 246deg.
Polymarket's real-money pool reads 44.5%.
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 Chicago Cubs across the books and prediction markets we track, alongside the Lakeshore Edge model's own number.
| Source | Implied % | Note |
|---|---|---|
| FanDuel | 51.0% | Execution book (this is the price you'd take). |
| Polymarket | 44.5% | Real-money prediction-market pool. |
| Kalshi | 48.5% | CFTC-regulated event market. |
| Lakeshore Edge model | 49.4% | Edge vs FanDuel: -1.7pt. |
Model performance on Chicago Cubs picks (60d)
How this side has graded in the journal over the last 60 days. Small slice — context, not a guarantee.
Frequently asked
What's the model's edge on Chicago Cubs @ Pittsburgh Pirates?
The Lakeshore Edge model rates Chicago Cubs at 49% to win or cover, versus FanDuel's implied 49% — a marginal edge of -1.7pt. 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 Chicago Cubs to win according to the model?
49% by the Lakeshore Edge model. Polymarket's real-money traders price the same outcome at 44.5%. 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.
How has the model done on Chicago Cubs picks recently?
Over the last 60 days the model has made 16 Chicago Cubs picks, going 4-12 (25% win rate) averaging +1.71pt CLV with -53.52% ROI. Recent-team performance is a small slice; treat it as context for tonight's call rather than a guarantee.
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.