Boston Red Sox at Seattle Mariners Matchup 6/21/26

31-44, 4th AL East

at

BOS 1 @ SEA 3

Final

40-39, 5th AL West

BOS 1 @ SEA 3

Final

Red Sox Lineup

Mariners Lineup

BOS @ SEA Matchups Matchups

Injuries

Schedule

Odds Odds Comparison | Splits Bet Splits | BOS Red Sox L6 Last 6 | SEA Mariners L6 Last 6

Boston Red Sox Red Sox Projected

Projected

Boston Red Sox Red Sox

31-44, 6th AL East

BOS 1 @ SEA 3

Final

Seattle Mariners Mariners Projected

Projected

40-39, 1st AL West

Game			Spread		Team Totals		Over/Under		Moneyline		Charts
Game	Hitters Rating	Pitchers Rating	Open	Current	Open	Current	Open	Current	Open	Current	Line Moves
Boston Red Sox Red Sox	0	0	+1.5 (-222)	+1.5 (-222)	4.5	4.5	6.5 runs	6.5 runs	+108	+108
Seattle Mariners Mariners	0	0	-1.5 (+179)	-1.5 (+179)	3.5	4.5			-128	-128

Odds Comparison

Vegas vs. Lineups.com Odds
	Boston Red Sox Red Sox		Seattle Mariners Mariners
	Vegas	Difference	Vegas	Difference
Moneyline	+108	108	-128	128
Totals	4.5	4.5	4.5	4.5
Win Probability	48%	48%	56%	56%

Over/Under
	Vegas	Difference
Over/Under	6.5	6.5

Against the Spread(ATS) History
Season  |  Last 3  |  Last 5	ATS	Home	Away
Boston Red Sox Red Sox	29-42	10-27	19-15
Seattle Mariners Mariners	38-35	20-20	18-15

Over/Under History
Season  |  Last 3  |  Last 5	Over/Under	Home	Away
Boston Red Sox Red Sox	10-9-0	2-5-0	8-4-0
Seattle Mariners Mariners	9-12-0	7-5-0	2-7-0

	Boston Red Sox Red Sox			Seattle Mariners Mariners
Line	Overall	Home	Away	Overall	Home	Away
7 or less	1-1-0	0-1-0	1-0-0	3-4-0	3-3-0	0-1-0
8 or 8.5	7-8-0	1-4-0	6-4-0	5-7-0	4-2-0	1-5-0
9 or 9.5	2-0-0	1-0-0	1-0-0	1-1-0	0-0-0	1-1-0
10 or 10.5	0-0-0	0-0-0	0-0-0	0-0-0	0-0-0	0-0-0
11 and over	0-0-0	0-0-0	0-0-0	0-0-0	0-0-0	0-0-0

Bet Splits

Boston Red Sox Red Sox
	Record	Win %	Cover Spread %	Avg Point Totals
Away	19-18	51.4%	48.6	4.5
After Win	12-18	40%	33.3	3.8

Seattle Mariners Mariners
	Record	Win %	Cover Spread %	Avg Point Totals
Home	21-19	52.5%	35	3.9
After Losses	16-17	48.5%	39.4	4.4

Boston Red Sox Last 6 Matchups

Game					Boston Red Sox Red Sox				Opponent
Date	Score	Team ML	Opp ML	Over/Under	Total	Starting Pitcher	OPS	Avg	Total	Starting Pitcher	OPS	Avg
6/21/26	BOS 5 @ SEA 1	+109	-129	7 runs	3.2 runs	Connelly Early (L)	.578	.188	3.8 runs	Emerson Hancock (R)	.283	.071
6/20/26	BOS 6 @ SEA 2	+100	-118	6.5 runs	3.1 runs	Ranger Suarez (L)	.757	.294	3.4 runs	Bryce Miller (R)	.389	.069
6/18/26	BOS 3 vs TOR 4	-139	+117	9.5 runs	5.3 runs	Sonny Gray (R)	.575	.161	4.2 runs	Trey Yesavage (R)	.894	.294
6/17/26	BOS 0 vs TOR 3	-118	-101	10 runs	5.2 runs	Jake Bennett (L)	.592	.212	4.8 runs	Braydon Fisher (R)	.564	.229
6/16/26	BOS 1 vs TOR 6	+102	-121	7.5 runs	3.5 runs	Payton Tolle (L)	.684	.229	3.9 runs	Dylan Cease (R)	.834	.212
6/15/26	BOS 4 vs TEX 6	-117	-101	9 runs	4.6 runs	Connelly Early (L)	.757	.265	4.3 runs	Nathan Eovaldi (R)	.936	.325

Seattle Mariners Last 6 Matchups

Game					Seattle Mariners Mariners				Opponent
Date	Score	Team ML	Opp ML	Over/Under	Total	Starting Pitcher	OPS	Avg	Total	Starting Pitcher	OPS	Avg
6/21/26	SEA 1 vs BOS 5	-129	+109	7 runs	3.8 runs	Emerson Hancock (R)	.283	.071	3.2 runs	Connelly Early (L)	.578	.188
6/20/26	SEA 2 vs BOS 6	-118	+100	6.5 runs	3.4 runs	Bryce Miller (R)	.389	.069	3.1 runs	Ranger Suarez (L)	.757	.294
6/18/26	SEA 3 vs BAL 0	-134	+114	7.5 runs	4.1 runs	Bryan Woo (R)	.433	.172	3.3 runs	Shane Baz (R)	.315	.100
6/18/26	SEA 3 vs BAL 5	-133	+112	7.5 runs	4.1 runs	George Kirby (R)	.724	.219	3.4 runs	Kyle Bradish (R)	.838	.286
6/17/26	SEA 3 vs BAL 1	-147	+124	7.5 runs	4.3 runs	Logan Gilbert (R)	.584	.231	3.2 runs	Brandon Young (R)	.289	.100
6/14/26	SEA 1 @ WSH 10	-132	+111	10.5 runs	5.7 runs	Emerson Hancock (R)	.355	.161	4.7 runs	P.J. Poulin (L)	.058	.368