Boston Red Sox vs Seattle Mariners AI Sports Picks & Predictions

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MLB

Boston Red SoxBOS

1–3

Final

Seattle MarinersSEA

T-Mobile Park

Team Season Averages

Boston Red SoxLeads 2 of 18

Seattle MarinersLeads 16 of 18

Batting

3.96Runs per game4.14
0.244Batting average0.232
0.312On-base percentage0.313
0.382Slugging percentage0.388
0.694OPS0.701
0.85Home runs per game1.24
8.20Hits per game7.69
63Home runs97
54Stolen bases57

Pitching

3.86ERA3.66
1.26WHIP1.18
8.57Strikeouts per nine8.81
3.06Walks per nine2.59
3.78Runs allowed per game3.62
0.243Opponent batting average0.240
622Pitching strikeouts679
28Quality starts34
15Saves18

Highlighted values lead the matchup; for points allowed, turnovers and similar stats, lower is better.

Odds

Sportsbook	Spread (SEA)	Total	BOS ML	SEA ML
DDraftKings	-1.5	6.5	+113	-136
FFanDuel	-1.5	6.5	+108	-126
BBetMGM	-1.5	6.5	+110	-135
CCaesars	-1.5	6.5	+110	-130
BBetOnline	-1.5	6.5	+112	-123
BBetRivers	-1.5	6.5	+106	-132
BBetus	-1.5	6.5	+112	-123
BBovada	-1.5	6.5	+104	-124
FFanatics	-1.5	6.5	+105	-125
LLowVig	-1.5	6.5	+112	-123
MMyBookie	-1.5	6.5	+111	-130

Game Information

T-Mobile Park

Stadium

Jun 21, 2026

4:10 PM EDT

Gametime weather

Conditions pending

Lineups

BOS

Starters

SEA

Starters

Rankings

Team	Offense	Defense
BOS	29th	7th
SEA	23rd	5th

Matchup

BOSSEA

31-43Record39-39
41.9%Win %50.0%
12-25Home record21-19
19-18Road record18-20
4-6Last 103-7
2Streak-2
-5Run diff+15
6-17Division14-9
1 (B2B)Rest days1 (B2B)

Scores

Team	1	2	3	4	5	6	7	8	9	T
BOS	0	0	1	0	0	0	0	0	0	1
SEA	0	1	0	0	1	1	0	0	—	3

Team Stats

BOSStatSEA

1Runs3
5Hits6
0Errors1
1Home runs1
1RBI3
1Stolen bases1
13K (bat)4
4K (pit)13
3BB (pit)2

Player Stats

BOS — Batting

Player	AB	R	H	HR	RBI	BB
Jarren DuranLF	4	0	0	0	0	0
Anthony Seigler2B	4	0	0	0	0	0
Ceddanne RafaelaCF	4	0	1	0	0	0
Willson Contreras1B	4	0	0	0	0	0
Caleb Durbin3B	3	0	2	0	0	0
Mickey GasperC	3	0	1	0	0	1
Nate EatonOF	2	1	1	1	1	1
Connor WongC	2	0	0	0	0	0
Marcelo Mayer2B	2	0	0	0	0	0
Masataka YoshidaDH	1	0	0	0	0	0
Andruw MonasterioSS	1	0	0	0	0	0
Carlos NarvaezC	0	0	0	0	0	0

BOS — Pitching

Player	IP	H	R	ER	BB	K
Payton TolleSP	6.0	6	3	3	2	2
Ryan WatsonRP	1.0	0	0	0	0	2
Danny CoulombeRP	1.0	0	0	0	1	0

SEA — Batting

Player	AB	R	H	HR	RBI	BB
Cal RaleighC	4	0	0	0	0	0
Cole Young2B	3	0	1	0	1	0
Josh Naylor1B	3	0	0	0	0	1
J.P. CrawfordSS	3	0	1	0	0	1
Rob RefsnyderDH	3	0	1	0	0	0
Victor RoblesRF	3	0	0	0	0	0
Weston Wilson3B	3	1	1	0	0	0
Dominic CanzoneDH	3	1	1	1	2	0
Julio RodriguezCF	3	1	1	0	0	1
Colt Emerson3B	1	0	0	0	0	0
Luke RaleyRF	0	0	0	0	0	0

SEA — Pitching

Player	IP	H	R	ER	BB	K
Logan GilbertSP	6.1	3	1	1	2	8
Andres MunozRP	1.0	1	0	0	0	2
Eduard BazardoRP	1.0	0	0	0	0	1
Gabe SpeierRP	0.2	1	0	0	0	2

Scoring Summary

80 events · 4 scoring

Inning 1 Top

Top
Seigler struck out looking.
0-0
Top
Rafaela reached on infield single to second.
0-0
Top
Gasper popped out to first.
0-0
Top
Rafaela stole second.
0-0
Top
Contreras struck out swinging.
0-0

Inning 1 Bottom

Bottom
Crawford lined out to first.
0-0
Bottom
Raleigh fouled out to first.
0-0
Bottom
Rodríguez flied out to center.
0-0

Inning 2 Top

Top
Duran grounded out to first.
0-0
Top
Durbin struck out swinging.
0-0
Top
Mayer struck out swinging.
0-0

Inning 2 Bottom

Bottom
Naylor flied out to center.
0-0
Bottom
Refsnyder flied out to first.
0-0
Bottom
Canzone homered to left (348 feet).
0-1
Bottom
Robles struck out looking. Seattle Mariners challenged call on the field was upheld
0-1

Inning 3 Top

Top
Wong grounded out to shortstop.
0-1
Top
Eaton homered to left (409 feet).
1-1
Top
Seigler flied out to center.
1-1
Top
Rafaela grounded out to pitcher.
1-1

Inning 3 Bottom

Bottom
We. Wilson grounded out to shortstop.
1-1
Bottom
Young grounded out to first.
1-1
Bottom
Crawford grounded out to shortstop.
1-1

Inning 4 Top

Top
Gasper walked.
1-1
Top
Contreras grounded into double play, shortstop to second to first, Gasper out at second.
1-1
Top
Duran struck out swinging.
1-1

Inning 4 Bottom

Bottom
Raleigh struck out swinging.
1-1
Bottom
Rodríguez walked.
1-1
Bottom
Naylor walked, Rodríguez to second.
1-1
Bottom
Refsnyder grounded into double play, third to first, Rodríguez out at third.
1-1

Inning 5 Top

Top
Durbin singled to left.
1-1
Top
Durbin picked off first.
1-1
Top
Mayer struck out swinging.
1-1
Top
Wong flied out to shortstop.
1-1

Inning 5 Bottom

Bottom
Canzone lined out to right.
1-1
Bottom
Robles flied out to left.
1-1
Bottom
We. Wilson singled to left.
1-1
Bottom
We. Wilson stole second.
1-1
Bottom
Young singled to left, We. Wilson scored.
1-2
Bottom
Crawford reached on bunt single to third, Young to second.
1-2
Bottom
Raleigh grounded into fielder's choice to third, Crawford out at second.
1-2

Inning 6 Top

Top
Eaton walked.
1-2
Top
Eaton to second on wild pitch by Gilbert.
1-2
Top
Seigler struck out swinging.
1-2
Top
Rafaela lined into double play, right to shortstop, Eaton doubled off second.
1-2

Inning 6 Bottom

Bottom
Rodríguez singled to center.
1-2
Bottom
Naylor flied out to center.
1-2
Bottom
Refsnyder singled to center, Rodríguez to third.
1-2
Bottom
Canzone grounded out to shortstop, Rodríguez scored, Refsnyder to second.
1-3
Bottom
Robles flied out to left.
1-3

Inning 7 Top

Top
Raley in right field.
1-3
Top
Gasper safe at first on throwing error by first baseman Naylor.
1-3
Top
Contreras struck out swinging.
1-3
Top
Speier relieved Gilbert
1-3
Top
Duran struck out swinging.
1-3
Top
Durbin doubled to left, Gasper to third.
1-3
Top
Monasterio hit for Mayer
1-3
Top
Monasterio struck out swinging.
1-3

Inning 7 Bottom

Bottom
Monasterio at shortstop.
1-3
Bottom
Coulombe relieved Tolle
1-3
Bottom
We. Wilson grounded out to third.
1-3
Bottom
Young popped out to shortstop.
1-3
Bottom
Crawford walked.
1-3
Bottom
Raleigh flied out to left.
1-3

Inning 8 Top

Top
Bazardo relieved Speier
1-3
Top
Yoshida hit for Wong
1-3
Top
Yoshida flied out to left.
1-3
Top
Eaton struck out looking.
1-3
Top
Seigler grounded out to second.
1-3

Inning 8 Bottom

Bottom
Narváez catching.
1-3
Bottom
Watson relieved Coulombe
1-3
Bottom
Rodríguez lined out to first.
1-3
Bottom
Naylor struck out swinging.
1-3
Bottom
Emerson hit for Refsnyder
1-3
Bottom
Emerson struck out looking.
1-3

Inning 9 Top

Top
Emerson as designated hitter.
1-3
Top
Muñoz relieved Bazardo
1-3
Top
Rafaela flied out to right.
1-3
Top
Gasper singled to right.
1-3
Top
Contreras struck out swinging.
1-3
Top
Duran struck out swinging.
1-3

Boston Red Sox vs Seattle Mariners AI sports predictions & season series →

Player props

Boston Red Sox vs Seattle Mariners Player Props

Prop lines and results for the players in this game, by market.

Nick Sogard
Home Runs: 3/20 over · last line 0.5
Nick Sogard Home Runs props Nick Sogard Hits props Nick Sogard Hits Runs Rbis props
Adley Rutschman
Home Runs: 2/19 over · last line 0.5
Adley Rutschman Home Runs props Adley Rutschman Walks props Adley Rutschman Hits props
George Kirby
Outs: 8/19 over · last line 17.5
George Kirby Outs props George Kirby Strikeouts props George Kirby ER props
Roman Anthony
Hits: 7/18 over · last line 0.5
Roman Anthony Hits props Roman Anthony RBIs props Roman Anthony Hits Runs Rbis props
Sonny Gray
Hits Allowed: 11/18 over · last line 3.5
Sonny Gray Hits Allowed props Sonny Gray Strikeouts props Sonny Gray Outs props
Bryan Woo
Hits Allowed: 8/17 over · last line 4.5
Bryan Woo Hits Allowed props Bryan Woo Outs props Bryan Woo Strikeouts props
Emerson Hancock
Strikeouts: 11/17 over · last line 5.5
Emerson Hancock Strikeouts props Emerson Hancock Hits Allowed props Emerson Hancock Outs props
Masataka Yoshida
Hits Runs Rbis: 9/17 over · last line 1.5
Masataka Yoshida Hits Runs Rbis props Masataka Yoshida Home Runs props Masataka Yoshida Hits props
Connor Wong
Hits: 6/16 over · last line 0.5
Connor Wong Hits props Connor Wong Hits Runs Rbis props Connor Wong RBIs props
Curtis Mead
Home Runs: 1/16 over · last line 0.5
Curtis Mead Home Runs props Curtis Mead Hits Runs Rbis props Curtis Mead RBIs props
Bryce Miller
Outs: 6/15 over · last line 15.5
Bryce Miller Outs props Bryce Miller ER props Bryce Miller Hits Allowed props
Isiah Kiner-Falefa
Home Runs: 0/14 over · last line 0.5
Isiah Kiner-Falefa Home Runs props Isiah Kiner-Falefa Hits props Isiah Kiner-Falefa RBIs props

League-wide markets: MLB Home Runs props · MLB Hits props · MLB Hits Runs Rbis props · MLB Walks props · MLB Outs props · MLB Strikeouts props · MLB ER props · MLB RBIs props · MLB Hits Allowed props

Boston Red Sox vs Seattle Mariners: Final Score & Recap

The Seattle Mariners beat the Boston Red Sox 3-1 in this MLB game at T-Mobile Park on Sunday, June 21, 2026. The line score, team and player box scores, and scoring summary are in the Game Stats tab.

Team pages: Boston Red Sox · Seattle Mariners

Boston Red Sox vs Seattle Mariners Odds

DraftKings lists the Seattle Mariners at SEA -1.5 on the run line, with the total set at 6.5. Moneylines are Boston Red Sox +113 and Seattle Mariners -136. Those are the closing numbers; the odds table above compares every book we track.

See the full MLB odds board and the MLB schedule. Looking for a side rather than a line? See today's MLB picks. For the model's reasoning, read our AI MLB predictions.

Boston Red Sox vs Seattle Mariners — Common Questions

Who won Boston Red Sox vs Seattle Mariners?+

The Seattle Mariners beat the Boston Red Sox 3-1 on Jun 21, 2026 at T-Mobile Park. The full box score and line score are on this page.

What are the odds for Boston Red Sox vs Seattle Mariners?+

Where was Boston Red Sox vs Seattle Mariners played?+

The game was at T-Mobile Park.

Is Stat Sniper a sportsbook?+

No. Stat Sniper does not accept wagers or hold funds. The scores, odds, and stats on this page are reference data — any bet you place happens at the sportsbook of your choice.