MLB matchup analysis
Phillies vs Nationals Prediction, Odds and Model Pick
Tuesday, September 15, 2026 at Nationals Park · 6:45 PM ET
LyDia prediction: Philadelphia Phillies moneyline
The case for Philadelphia Phillies
The case for Washington Nationals
Why it is not official
Why the setup score is what it is
Why the price is what it is
Read the full model output
Philadelphia Phillies remains on the watchlist. Lab Rating 6.6/10: conviction 8.97, pitching plan 33.33, offense 23.52. LyDia projects 72.9% against a 55.2% no-vig market number, a 17.8% model edge at -130. Philadelphia Phillies owns the starting pitcher edge by 45 points. Bullpen read: Elevated volatility. Philadelphia Phillies's pen efficiency: Below average (3.7/10). Bullpen fatigue moved this probability down 22.8 points from 95.7% (starting pitcher and team strength only) to 72.9%. Lineup check: Philadelphia Phillies is a touch below its season form (-0.049 OPS); Washington Nationals is a touch below its season form (-0.036 OPS).
Final result
Phillies 3, Nationals 6
How the analysis held up
Washington Nationals won. LyDia's model favored the other side.
Cristopher Sánchez (Philadelphia Phillies) was LyDia's favored starter by pitcher score, but Jackson Kent actually pitched better tonight: 5.0 IP, 3 ER (5.40 ERA) against 6.1 IP, 5 ER (7.11 ERA). The edge did not show up in this game. Both starters struggled; this was not a case of one clean outing beating one bad one.
The Philadelphia Phillies bullpen was flagged as elevated risk pregame (Tired). In relief it actually allowed 1 earned run over 1.2 innings (5.40 ERA) — the risk read showed up.
The Washington Nationals bullpen was flagged as elevated risk pregame (High risk). In relief it actually allowed 0 earned runs over 4.0 innings (0.00 ERA) — the risk read did not show up on the scoreboard tonight.
Likely driver: Cristopher Sánchez, the pick's own starter, was rocked for a 7.11 ERA, and the Washington Nationals bullpen quietly shut the game down (0.00 ERA over 4.0 innings).
Game information
| Matchup | Philadelphia Phillies at Washington Nationals |
|---|---|
| Date | Tuesday, September 15, 2026 |
| First pitch | 6:45 PM ET |
| Venue | Nationals Park |
| Starting pitchers | Cristopher Sánchez vs Jackson Kent |
| Weather | Game-time forecast: 72°F, 0% precipitation chance, 6 mph wind from E. |
Starting pitcher matchup
Full Pitcher Matchup Tool →| Metric | Phillies | Nationals |
|---|---|---|
| Pitching plan | Traditional starter | Traditional starter |
| Expected innings | 6⅓ | 4⅔ |
| Throws | L | L |
| LyDia pitcher score (higher is better) | 75 | 30 |
| ERA (lower is better) | 2.93 | 6.40 |
| WHIP (lower is better) | 1.22 | 1.76 |
| K/9 (higher is better) | 10.0 | 7.5 |
| K-BB% (higher is better) | 21.2% | 2.6% |
| K% (higher is better) | 26.7% | 17.9% |
| BB% (lower is better) | 5.5% | 15.2% |
| BB/9 (lower is better) | 2.0 | 6.4 |
| HR/9 (lower is better) | 0.8 | 0.6 |
| Ground-ball rate | 65.0% | 52.2% |
| Fly-ball rate | 35.0% | 47.8% |
Pitcher edge: LyDia gives Cristopher Sánchez a 45-point edge over Jackson Kent, driven mainly by BB/9 (2.0 vs 6.4) and K-BB% (21.2% vs 2.6%).
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 →Neither side is playing well. Phillies are 4-6 in their last 10 and averaging 4.0 runs per game over the last 15 days; Nationals are 4-6 in their last 10 and averaging 4.5 runs per game over the last 15 days. Season run differential separates them by almost nothing (+0.19 against +0.04).
| Metric | Phillies | Nationals |
|---|---|---|
| Last 10 | 4-6 | 4-6 |
| Last 10 by venue (away team on the road, home team at home) | 6-4 on the road | 8-2 at home |
| OPS, last 15 days | 0.662 | 0.715 |
| wOBA, last 15 days (hot/cold read) | 0.293 | 0.313 |
| Runs per game, last 15 days | 4.0 | 4.5 |
| K% last 15 days (lower is better) | 19.7% | 25.4% |
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 | Phillies | Nationals |
|---|---|---|
| OPS | 0.711 | 0.679 (-0.072 vs szn) |
| Runs per game | 4.70 (+0.214 vs szn) | 4.11 (-1.007 vs szn) |
| wOBA (model offense input) | 0.313 | 0.300 (-0.030 vs szn) |
| K% (lower is better) | 18.0% (-4.0% vs szn) | 23.1% (+1.3% vs szn) |
Over the last 30 days the Phillies have been the better offense, 0.313 wOBA to 0.300.
Season profile
Full Stats page →| Metric | Phillies | Nationals |
|---|---|---|
| Record | 83-68 | 71-81 |
| Run differential / game (team quality) | +0.19 | +0.04 |
| Runs scored / game (offense, season) | 4.49 | 5.12 |
| Runs allowed / game (defense, season, lower better) | 4.30 | 5.08 |
| Season OPS | 0.711 | 0.751 |
| K% season (lower is better) | 22.0% | 21.8% |
| OPS vs opposing hand (season) | 0.711 | 0.776 |
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. Phillies and Nationals 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 | Phillies | Nationals |
|---|---|---|
| Fatigue | 6.5/10, Tired | 7.6/10, Tired |
| Efficiency | 3.7/10, Below average | 3.0/10, Below average |
| Combined risk | 7.2/10, Tired | 8.6/10, High risk |
| Relief innings, last 7 days | 22.3 | 25.0 |
| Back-to-back arms | 7 | 4 |
| 7-day ERA | 5.64 | 6.84 |
| 7-day WHIP | 1.61 | 1.56 |
Fatigue measures workload. Efficiency measures recent run prevention. Combined risk is what the moneyline and totals systems use.
Run total projection
Full Totals Projections →A verified LyDia totals projection was not available when this page was generated. Every game's projection lives on the Totals Projections tool.
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