MLB matchup analysis
Pirates vs White Sox Prediction, Odds and Model Pick
Tuesday, September 8, 2026 at Rate Field · 7:40 PM ET
LyDia prediction: Chicago White Sox moneyline
The case for Chicago White Sox
The case for Pittsburgh Pirates
What to watch
Why the setup score is what it is
Why the price is what it is
Read the full model output
Chicago White Sox is an official moneyline pick because it clears both gates: 71.4% model win probability and 8.0/10 Lab Rating. LyDia projects 71.4% against a 56.4% no-vig market number, a 15.0% model edge at -135. Chicago White Sox owns the starting pitcher edge by 16 points. Bullpen read: Elevated volatility. Chicago White Sox's pen efficiency: Effective (6.9/10). Bullpen fatigue moved this probability down 21.5 points from 92.9% (starting pitcher and team strength only) to 71.4%. Lineup check: Chicago White Sox is near its season form (-0.006 OPS); Pittsburgh Pirates is in a cold stretch (-0.080 OPS). Recent form supports this side and is included in the unified run projection.
Game information
| Matchup | Pittsburgh Pirates at Chicago White Sox |
|---|---|
| Date | Tuesday, September 8, 2026 |
| First pitch | 7:40 PM ET |
| Venue | Rate Field |
| Starting pitchers | Bubba Chandler vs Sean Burke |
| Weather | Game-time forecast: 80°F, 1% precipitation chance, 7 mph wind from S. |
Starting pitcher matchup
Full Pitcher Matchup Tool →| Metric | Pirates | White Sox |
|---|---|---|
| Pitching plan | Traditional starter | Traditional starter |
| Expected innings | 5 | 5⅓ |
| Throws | R | R |
| LyDia pitcher score (higher is better) | 59 | 71 |
| ERA (lower is better) | 4.24 | 3.46 |
| WHIP (lower is better) | 1.35 | 1.20 |
| K/9 (higher is better) | 8.1 | 9.8 |
| K-BB% (higher is better) | 8.9% | 17.4% |
| K% (higher is better) | 20.7% | 26.0% |
| BB% (lower is better) | 11.9% | 8.6% |
| BB/9 (lower is better) | 4.6 | 3.2 |
| HR/9 (lower is better) | 0.8 | 1.0 |
| Ground-ball rate | 44.1% | 37.3% |
| Fly-ball rate | 55.9% | 62.7% |
Pitcher edge: LyDia gives Sean Burke a 12-point edge over Bubba Chandler, driven mainly by K-BB% (17.4% vs 8.9%) and BB/9 (3.2 vs 4.6).
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 →Pirates are 6-4 in their last 10 and averaging 3.4 runs per game over the last 15 days; White Sox are 5-5 in their last 10 and averaging 4.8 runs per game over the last 15 days. Season run differential separates them by almost nothing (+0.18 against +0.34).
| Metric | Pirates | White Sox |
|---|---|---|
| Last 10 | 6-4 | 5-5 |
| Last 10 by venue (away team on the road, home team at home) | 5-5 on the road | 6-4 at home |
| OPS, last 15 days | 0.651 | 0.720 |
| wOBA, last 15 days (hot/cold read) | 0.295 | 0.322 |
| Runs per game, last 15 days | 3.4 | 4.8 |
| K% last 15 days (lower is better) | 24.3% | 23.5% |
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 | Pirates | White Sox |
|---|---|---|
| OPS | 0.658 (-0.075 vs szn) | 0.748 (+0.022 vs szn) |
| Runs per game | 3.85 (-0.988 vs szn) | 4.57 (-0.151 vs szn) |
| wOBA (model offense input) | 0.295 (-0.030 vs szn) | 0.332 (+0.011 vs szn) |
| K% (lower is better) | 25.5% (+1.2% vs szn) | 23.6% |
Over the last 30 days the White Sox have been the better offense, 0.332 wOBA to 0.295. They are running hot against their own season line (+0.011 wOBA). Pirates are striking out at 25.5% over the window — something the opposing starter can lean on.
Season profile
Full Stats page →| Metric | Pirates | White Sox |
|---|---|---|
| Record | 71-73 | 75-68 |
| Run differential / game (team quality) | +0.18 | +0.34 |
| Runs scored / game (offense, season) | 4.82 | 4.76 |
| Runs allowed / game (defense, season, lower better) | 4.64 | 4.41 |
| Season OPS | 0.731 | 0.726 |
| K% season (lower is better) | 24.3% | 23.9% |
| OPS vs opposing hand (season) | 0.753 | 0.721 |
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. Pirates and White Sox 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 | Pirates | White Sox |
|---|---|---|
| Fatigue | 6.4/10, Tired | 7.7/10, Tired |
| Efficiency | 5.1/10, Average | 6.9/10, Effective |
| Combined risk | 6.4/10, Tired | 6.8/10, Tired |
| Relief innings, last 7 days | 26.7 | 27.3 |
| Back-to-back arms | 6 | 2 |
| 7-day ERA | 4.39 | 1.98 |
| 7-day WHIP | 1.16 | 0.91 |
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 8.0 runs below 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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