Philadelphia Phillies @ Washington Nationals
PPAwayPhiladelphia Phillies68%
@WNHomeWashington Nationals32%
Model PickPhiladelphia Phillies 68%Market edge — disclosed after closing odds are collectedEvidence 12 structured · 2 qualitative
AI Summary grounded in real data · zero hallucination
The model projects the Philadelphia Phillies with a 68% win probability, selecting them as the recommended bet. The primary drivers supporting this pick are '팀 장타율(SLG)' and '팀 출루율(OBP)', while the most critical swing risk stems from a heavily negative '선발 매치업 / Starting Pitcher Matchup'. The edge against the market is uncalculated, and we transparently acknowledge that our model does not beat the market over the long term.
Logistic-regression statistical model — predicts Philadelphia Phillies vs Washington Nationals by accumulating the log-odds contributions of 12 proven structured metrics. Only structured metrics enter the probability; qualitative and folklore factors get a label only. Predictions are sealed with SHA-256 before the game.
Model factor contribution How the 32% home win was derived
Home Advantage+2.5
Pythagorean Expectation-0.6
Season Win%-1.5
Home/Away Split-0.9
Team OBP+1.9
Team SLG+2
Team ERA-6.2
Team WHIP-2.7
Starting Pitcher Matchup-12.7
Baseline 50% → final home win31.9%
Each factor's log-odds contribution accumulated · only structured metrics reflected (qualitative/folklore excluded) · each %p converts log-odds to probability, so it's non-linear — a simple sum may not exactly equal (final − baseline)
Structured metric analysis 12 metrics · fully disclosed
| Metric | Analysis (home vs away) | Source |
|---|---|---|
| Home Advantage | Washington Nationals at home — MLB historical home win rate ~.535 (ballpark familiarity, no travel) | MLB StatsAPI |
| Pythagorean Expectation | Home 50.4% (778 RS/772 RA) vs Away 51.9% (678/650) — strength from runs scored/allowed | MLB StatsAPI |
| Season Win% | Home 71-81 (.467) vs Away 83-68 (.550) | MLB StatsAPI |
| Last 10 Games Form | Home 4-6 vs Away 4-6 · Home W4 | MLB StatsAPI |
| Home/Away Split | Home team home 37-40 · away team away 42-34 | MLB StatsAPI |
| Team OBP | Home .324 vs Away .311 — foundation of scoring | MLB StatsAPI |
| Team SLG | Home .427 vs Away .400 (OPS .751/.711) | MLB StatsAPI |
| Team ERA | Home 4.72 vs Away 4.01 — lower is better | MLB StatsAPI |
| Team WHIP | Home 1.39 vs Away 1.28 — baserunners allowed per inning (lower is better) | MLB StatsAPI |
| Starting Pitcher Matchup | Home Jared Simpson (ERA 6.75) vs Away Zack Wheeler (ERA 3.14) | MLB StatsAPI |
| Hitting Detail (BABIP, K, BB) | Home BABIP .290 · K 1273 · BB 526 / Away BABIP .284 · K 1243 · BB 474 (BABIP is luck-driven → not factored into probability) | MLB StatsAPI |
| Pitching Detail (K/BB, HR9) | Home K/BB 2.13 · HR9 1.36 / Away K/BB 3.25 · HR9 1.21 | MLB StatsAPI |
Qualitative & folklore factors 2 factors · fully disclosed
Qualitative · Nats' Winning Streak
Daylen Lile's pinch-hit homer propelled the Nationals to a 6-3 victory over the Phillies, extending their winning streak to four games and boosting team morale.
Basis: LLM · news · Nats top Phillies for 4th straight win
Qualitative · Phillies' September Slump
The Phillies have been consistently struggling throughout September, negatively impacting their overall team morale and performance.
Basis: LLM · news · The Phillies continue to sink in September
12 source headlines (auto-collected · basis disclosed)
- Philadelphia Phillies at Washington Nationals Game Story, Scores/Highlights - 09/15/2026
- Philadelphia Phillies at Washington Nationals MLB Prediction, Picks & Odds for Sept. 15, 2026
- Philadelphia Phillies at Washington Nationals - Where to Watch, Stream Info, TV Channel, and Live Updates (September 16, 2026)
- How to watch Phillies vs. Nationals: TV channel and streaming options for September 15
- Nationals 6-3 Phillies (16 Sep, 2026) Game Stats
- Game Notes: Philadelphia Phillies vs Washington Nationals (September 15, 2026)
- Philadelphia Phillies vs Washington Nationals Odds, Spread, and Total
- What channel are the Phillies on tonight? What channel are the Nationals on?
Frequently asked questions This game's prediction summary
Philadelphia Phillies vs Washington Nationals — who's more likely to win?
SealedSlate's logistic-regression statistical model gives Philadelphia Phillies a 68% chance to win (Home 32% · Away 68%). MLB · 2026-09-17 07:45 KST.
How was the 31.9% home-win probability calculated?
Starting from a 50% baseline, we additively accumulate the log-odds contributions of 12 proven structured statistical metrics to reach the final 31.9%. Each factor's %p contribution is fully disclosed on the page; qualitative and folklore factors are not reflected in the probability.
Can this prediction be altered later?
No. Every prediction is sealed with a SHA-256 hash before the game starts and permanently recorded in the track record, making after-the-fact changes impossible. SealedSlate runs a transparent ledger that never inflates the hit rate and leaves missed predictions exactly as they were.
We don't compete on hit rate — every factor is fully disclosed and labeled. Only 📊 structured stats feed the probability (each factor's contribution shown in %p); ⚔️🔮 are context to weigh. Predictions are locked and sealed before the game — verify the hits directly on the track record.