Washington Nationals vs Boston Red Sox: MLB Prediction, Pick & Odds — Jun 30, 2026

WSH

39-36

PregameTue, 7:10 PM EDT

BOS

29-41

Verdict

Pass · no edge tonight.

The model doesn't see daylight against the posted line on this game. We don't surface negative-EV picks; check the drill-down for sub-model context.

Why this matchup

1 signal · model + market

Park factor

104 total idx

Fenway Park run environment

Park factor boosts run scoring, so contact quality matters more tonight here.

Fenway Park · Boston, Massachusetts

Drill down

Sub-model tables · ensemble breakdown · last meeting · book shop · player props

Pregame · scouting report

The matchup, end-to-end.

Probable starters, projected lineups, head-to-head this season, our model edge against the market — every angle on one surface.

Away starter

TBD

Probable starter not yet announced. ESPN typically posts the card 12–24 hours before first pitch.

Home starter

TBD

Probable starter not yet announced. ESPN typically posts the card 12–24 hours before first pitch.

Vegas line

Lines post once a sportsbook releases them.

Model edge

Our model rates this game once both starters are confirmed.

Head to head

SeriesSeries starts 6/29

TypeRegular Season Series

Model ensemble · how the prediction is built

3 sub-models, blended.

Each sub-model uses a different rating substrate. Bayesian model averaging weights them by rolling Brier score so the ensemble inherits each model's strengths. Disagreement flags games where the sub-models don't see eye-to-eye — lower confidence, wider band.

47.8%

ensemble · WSH favored

Elo Static
fallback · inputs missing
50.0%
P(BOS win)
33%
weight
Elo Pitching
fallback · inputs missing
50.0%
P(BOS win)
32%
weight
Bullpen Park
fallback · inputs missing
50.0%
P(BOS win)
34%
weight

Disagreement

0.00 pp

weighted σ across sub-models

Confidence

100% · high

maps from disagreement

Substrate count

0 / 3 active

ones with full inputs tonight

Weights recalibrated nightly on a 90-day rolling window with strict point-in-time correctness — no model gets credit for a game it hasn't seen. Headline % is Platt-scaled per league; sub-model rows show raw BMA inputs.

Player projections

BOS vs WSH.

Per-player stat projections built from a recency-weighted blend of the last ten games, season average, and matchup context. Confidence reflects sample size and stability — the top of each list is who to watch.

127

projections · 96 high confidence

Strikeouts

Payton TolleBOS
6.0± 3.7low
Cade CavalliWSH
5.9± 3.5medium
Ranger SuarezBOS
5.7± 3.7low

Hits

James WoodWSH
1.3± 1.0high
Ceddanne RafaelaBOS
1.2± 1.0high
Willson ContrerasBOS
1.1± 1.1high

Total bases

Willson ContrerasBOS
2.6± 3.2high
James WoodWSH
2.3± 2.2high
Ceddanne RafaelaBOS
1.9± 2.5high

RBIs

Willson ContrerasBOS
0.9± 1.1high
Ceddanne RafaelaBOS
0.7± 1.3high
CJ AbramsWSH
0.7± 0.8high

Earned runs

Jake BennettBOS
3.0± 2.3low
Zack LittellWSH
2.6± 2.6low
Connelly EarlyBOS
2.5± 2.6low

Projections recompute every 30 minutes · prop lines plug in once sportsbook ingest lands

Matchup · 2026

Team rate stats vs league

MLB Stats API

WSH

league avg

BOS

.744

OPS

◀

.717

.697

.323

OBP

◀

.319

.314

5.43

Runs / G

◀

4.50

3.93

4.65

Team ERA

4.17

▶

3.92

1.39

WHIP

1.31

▶

1.28

7.7

K / 9

8.5

▶

8.6

Data via ESPN · MLB Stats API · Baseball Savant

Washington Nationals at Boston Red Sox

The matchup, end-to-end.

3 sub-models, blended.

BOS vs WSH.

Team rate stats vs league

3 sub-models, blended.