MLB matchup analysis
Cubs vs Padres Prediction, Odds and Model Pick
Wednesday, September 30, 2026 at Petco Park · 10:00 PM ET
Leo prediction: San Diego Padres moneyline
The case for San Diego Padres
The case for Chicago Cubs
What to watch
Why the setup score is what it is
Why the price is what it is
Read the full model output
San Diego Padres is an official moneyline pick because it clears both gates: 71.8% model win probability and 8.3/10 Lab Rating. Leo projects 71.8% against a 56.9% no-vig market number, a 15.0% model edge at -137. San Diego Padres owns the starting pitcher edge by 15 points. Bullpen read: Elevated volatility. San Diego Padres's pen efficiency: Average (4.7/10). Pitching plan: Nick Pivetta 4.3 IP + remaining bullpen 4.7 IP. Bullpen fatigue, efficiency, and combined risk grade only the innings assigned to the bullpen. Lineup check: San Diego Padres is swinging a hot bat (+0.115 OPS); Chicago Cubs is a touch below its season form (-0.040 OPS). Recent form supports this side and is included in the unified run projection.
Final result
Cubs 1, Padres 4
How the analysis held up
San Diego Padres won, the side Leo's model favored.
Nick Pivetta (San Diego Padres), the starter Leo's pitcher score favored, actually outpitched Kevin Gausman: 3.1 IP, 1 ER (2.70 ERA) against 3.1 IP, 3 ER (8.10 ERA). The edge held up.
The Chicago Cubs bullpen was not flagged pregame, but it had a night worth noting: 1 earned run allowed over 4.2 relief innings (1.93 ERA) — quietly better than the pregame read implied.
The San Diego Padres bullpen was not flagged pregame, but it had a night worth noting: 0 earned runs allowed over 5.2 relief innings (0.00 ERA) — quietly better than the pregame read implied.
Chicago Cubs scored 1, 3.3 fewer than the 4.3 pregame projection.
San Diego Padres scored 4, 2.6 fewer than the 6.6 pregame projection.
Game information
| Matchup | Chicago Cubs at San Diego Padres |
|---|---|
| Date | Wednesday, September 30, 2026 |
| First pitch | 10:00 PM ET |
| Venue | Petco Park |
| Starting pitchers | Kevin Gausman vs Nick Pivetta |
| Weather | Game-time forecast: 71°F, 0% precipitation chance, 3 mph wind from W. |
Starting pitcher matchup
Full Pitcher Matchup Tool →| Metric | Cubs | Padres |
|---|---|---|
| Pitching plan | Traditional starter | Limited starter |
| Expected innings | 5⅔ | 4⅓ |
| Throws | R | R |
| Leo pitcher score (higher is better) | 63 | 78 |
| ERA (lower is better) | 4.51 | 2.86 |
| WHIP (lower is better) | 1.27 | 1.01 |
| K/9 (higher is better) | 9.3 | 10.9 |
| K-BB% (higher is better) | 18.3% | 24.3% |
| K% (higher is better) | 24.5% | 30.0% |
| BB% (lower is better) | 6.3% | 5.7% |
| BB/9 (lower is better) | 2.4 | 2.1 |
| HR/9 (lower is better) | 1.3 | 0.5 |
| Ground-ball rate | 47.8% | 35.5% |
| Fly-ball rate | 52.2% | 64.5% |
Pitcher edge: Leo gives Nick Pivetta a 15-point edge over Kevin Gausman, driven mainly by HR/9 (0.52 vs 1.32) and ERA (2.86 vs 4.51).
How to read this: the scorecards above name the starters; every number lives in this table.
Strikeout Projections Full strikeout projections →
Same data source as the Pitcher Matchup Tool, where every starter on the slate is compared side by side.
Recent form
Full Stats page →Cubs are 5-5 in their last 10 and averaging 4.0 runs per game over the last 15 days; Padres are 8-2 in their last 10 and averaging 6.3 runs per game over the last 15 days. On the season Cubs carry the better run differential per game (+0.91 against +0.25).
| Metric | Cubs | Padres |
|---|---|---|
| Last 10 | 5-5 | 8-2 |
| Last 10 by venue (away team on the road, home team at home) | 3-7 on the road | 9-1 at home |
| OPS, last 15 days | 0.727 | 0.832 |
| wOBA, last 15 days (hot/cold read) | 0.319 | 0.363 |
| Runs per game, last 15 days | 4.0 | 6.3 |
| K% last 15 days (lower is better) | 20.0% | 21.6% |
Last 15 days only. Hot and cold streaks for all 30 teams live on the Stats page.
30-day offense
Full offense tool →| Last 30 days | Cubs | Padres |
|---|---|---|
| OPS | 0.771 | 0.814 (+0.097 vs szn) |
| Runs per game | 5.00 (-0.247 vs szn) | 5.56 (+1.103 vs szn) |
| wOBA (model offense input) | 0.339 | 0.354 (+0.037 vs szn) |
| K% (lower is better) | 18.3% (-2.8% vs szn) | 20.7% (-0.9% vs szn) |
Over the last 30 days the Padres have been the better offense, 0.354 wOBA to 0.339. They are running hot against their own season line (+0.037 wOBA).
Season profile
Full Stats page →| Metric | Cubs | Padres |
|---|---|---|
| Record | 89-73 | 91-71 |
| Run differential / game (team quality) | +0.91 | +0.25 |
| Runs scored / game (offense, season) | 5.25 | 4.46 |
| Runs allowed / game (defense, season, lower better) | 4.34 | 4.20 |
| Season OPS | 0.767 | 0.717 |
| K% season (lower is better) | 21.1% | 21.6% |
| OPS vs opposing hand (season) | 0.757 | 0.722 |
Season-long team quality, not recent form. Run differential and run environment come from the season standings; splits for all 30 teams live on the Stats page, including the run environment table.
The Map
Full interactive map →Every team on today's slate, on any two axes you pick. Cubs and Padres are highlighted.
Bullpen matchup
Full Bullpen Fatigue Index →Risk is what the model actually uses: fatigue blended with how well the pen has pitched. High fatigue with high efficiency is a tired pen that is still getting outs.
| Metric | Cubs | Padres |
|---|---|---|
| Fatigue | 6.5/10, Tired | 5.9/10, Normal |
| Efficiency | 5.6/10, Effective | 4.7/10, Average |
| Combined risk | 6.2/10, Tired | 6.1/10, Normal |
| Relief innings, last 7 days | 25.0 | 25.3 |
| Back-to-back arms | 1 | 8 |
| 7-day ERA | 3.24 | 4.26 |
| 7-day WHIP | 1.28 | 1.46 |
Fatigue measures workload. Efficiency measures recent run prevention. Combined risk is what the moneyline and totals systems use.
Run total projection
Full Totals Projections →The model projects 3.8 runs above the market total. A research lean still requires a setup rating of at least 7.0/10. Team totals remain research-only until their graded sample is established.
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