What does this BOS @ SEA page show?

Every MatchWiz projection for this game in one place: each hitter's matchup score for hits, home runs, RBIs, runs, walks, stolen bases, total bases, H+R+RBI and fantasy points, and each starting pitcher's strikeout and pitcher-prop projections — with the live box score graded against every one of them (✓ hit / ✗ miss) as the game plays.

How often does the live data update?

Our poller checks every in-progress game roughly every 45 seconds. The score, inning, and every player's live line on this page refresh automatically — no reload needed.

What do the matchup scores mean?

Each score is 0–100, ranking that player's conditions for that stat against the full slate — driven by batter-vs-pitcher-hand splits, recent form, park and weather, lineup spot and workload. See "How it works" for the full methodology and our graded season record.

BOS @ SEA Live projections & gamecast · Sunday, June 21, 2026

BOS

Boston Red Sox

1–3

Final

SEA

Seattle Mariners

◆ T-Mobile ParkElevation 10 ftCenter Field 405 ft☀ 70°F SunnyWind 5 mph, Out To RF

Model Recap

Did our ranking beat this game? 1+ boards grade our top-5 scored players against the full field's rate; over/under boards grade our lean vs the posted line. Green = the model won the board here, red = it didn't.

Hits · top 5 3/5 field 10/18Home Runs · top 5 0/5 field 2/18RBIs · top 5 0/5 field 3/18Runs · top 5 1/5 field 4/18Walks · top 5 3/5 field 5/18Stolen Bases · top 5 1/5 field 2/18Total Bases · leans 8/18H+R+RBI · leans 7/18Strikeouts · leans 1/2Outs Recorded · leans 1/2Hits Allowed · leans 1/2Walks Allowed · leans 1/2Earned Runs · leans 1/2

Pre-Game Projections

Our model's numbers from before first pitch — they don't move during the game. The live grading happens on the player rows below. Build a DFS lineup for this slate →

Win prob BOS 45% · SEA 55%Proj total 7.7NRFI 61% (mkt 59%)★ J.P. Crawford · Hits 100★ Julio Rodríguez · Stolen Bases 100★ Logan Gilbert · Walks Allowed 100

BOS Lineup

✓

Confirmed lineupOfficial batting order is set.

Facing

Batting order

SEA Lineup

✓

Confirmed lineupOfficial batting order is set.

Facing

Batting order

Frequently asked questions

What does this BOS @ SEA page show?: Every MatchWiz projection for this game in one place: each hitter's matchup score for hits, home runs, RBIs, runs, walks, stolen bases, total bases, H+R+RBI and fantasy points, and each starting pitcher's strikeout and pitcher-prop projections — with the live box score graded against every one of them (✓ hit / ✗ miss) as the game plays.
How often does the live data update?: Our poller checks every in-progress game roughly every 45 seconds. The score, inning, and every player's live line on this page refresh automatically — no reload needed.
What do the matchup scores mean?: Each score is 0–100, ranking that player's conditions for that stat against the full slate — driven by batter-vs-pitcher-hand splits, recent form, park and weather, lineup spot and workload. See "How it works" for the full methodology and our graded season record.