Boston Red Sox @ Seattle Mariners — Jun 21, 2026

MLB T-Mobile Park, Seattle, WA·June 21, 2026
Boston Red Sox BOS 25-34, 16-14 Away
June 21, 2026 8:10 pm
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Seattle Mariners SEA 33-30, 19-16 Home
Standings
# Team W L PCT GB HOME AWAY
1 SEA Mariners 3329.532-19-1614-14
2 TEX Rangers 3031.4922.515-1315-18
3 OAK Athletics 2931.483311-1718-14
4 HOU Astros 2735.435613-1714-18
5 LAA Angels 2339.3711012-1811-21
# Team W L PCT GB HOME AWAY
1 TB Rays 3622.621-21-915-14
2 NYY Yankees 3624.600117-1019-14
3 BAL Orioles 2932.4758.519-1510-17
4 TOR Blue Jays 2932.4758.517-1312-19
5 BOS Red Sox 2534.42411.59-2016-14
# Team W L PCT GB HOME AWAY
1 TB Rays 3622.621-21-915-14
2 NYY Yankees 3624.600117-1019-14
3 CLE Guardians 3527.565317-1418-13
4 SEA Mariners 3329.532519-1614-14
5 CWS White Sox 3229.5255.520-1113-18
6 TEX Rangers 3031.4927.515-1315-18
7 OAK Athletics 2931.483811-1718-14
8 BAL Orioles 2932.4758.519-1510-17
9 TOR Blue Jays 2932.4758.517-1312-19
10 MIN Twins 2933.468917-1512-19
11 HOU Astros 2735.4351113-1714-18
12 BOS Red Sox 2534.42411.59-2016-14
13 DET Tigers 2438.3871414-1411-24
14 KC Royals 2338.37714.515-178-21
15 LAA Angels 2339.3711512-1811-21
# Team W L PCT GB HOME AWAY RS RA DIFF
1 ATL Braves 4120.672-18-1023-10320210+110
2 LAD Dodgers 3922.639220-1119-11321194+127
3 MIL Brewers 3721.6382.521-1116-10292199+93
4 TB Rays 3622.6213.521-915-14271261+10
5 NYY Yankees 3624.6004.517-1019-14309216+93
6 CLE Guardians 3527.5656.517-1418-13258252+6
7 SD Padres 3227.542816-1616-11229236-7
8 PIT Pirates 3328.541818-1515-13311276+35
9 ARI Diamondbacks 3228.5338.519-1113-17273263+10
10 SEA Mariners 3329.5328.519-1614-14266230+36
11 CHC Cubs 3229.525918-1214-17285267+18
12 CWS White Sox 3229.525920-1113-18285282+3
13 STL Cardinals 3128.525915-1616-12252266-14
14 CIN Reds 3129.5179.516-1515-14262300-38
15 PHI Phillies 3129.5179.515-1616-13233258-25
16 WSH Nationals 3131.50010.512-2019-12330337-7
17 TEX Rangers 3031.4921115-1315-18246235+11
18 OAK Athletics 2931.48311.511-1718-14254287-33
19 BAL Orioles 2932.4751219-1510-17279315-36
20 TOR Blue Jays 2932.4751217-1312-19247255-8
21 MIN Twins 2933.46812.517-1512-19290306-16
22 MIA Marlins 2834.45213.518-1511-19264285-21
23 HOU Astros 2735.43514.513-1714-18277314-37
24 NYM Mets 2635.4261515-1512-20244263-19
25 BOS Red Sox 2534.424159-2016-14233240-7
26 COL Rockies 2438.38717.512-1612-22268344-76
27 DET Tigers 2438.38717.514-1411-24241271-30
28 KC Royals 2338.3771815-178-21233286-53
29 SF Giants 2338.3771812-1611-22237304-67
30 LAA Angels 2339.37118.512-1811-21265323-58
Key Players
WA
0.284 AVG
7 HR
28 RBI
JD
0.221 AVG
10 HR
33 RBI
AG
0 ERA
0 W
2 SO
JR
0.256 AVG
13 HR
32 RBI
RA
0.28 AVG
6 HR
26 RBI
ND
0 ERA
0 W
2 SO
Stats Comparison
2026
League Percentile Ranking
Red Sox
Mariners
Batting 2–4
.249 6th
AVG
25th .233
.311 13th
OBP
22nd .306
.381 23rd
SLG
10th .397
.692 20th
OPS
13th .703
0.75 29th
HR/G
5th 1.30
3.9 28th
R/G
19th 4.2
Pitching 0–5
3.81 7th
ERA
5th 3.46
1.26 14th
WHIP
4th 1.17
8.7 11th
K/9
10th 8.7
3.1 9th
BB/9
1st 2.4
4.1 8th
RA/G
5th 3.8
2025
League Percentile Ranking
Red Sox
Mariners
Batting 5–1
.253 4th
AVG
21st .242
.314 10th
OBP
16th .308
.419 9th
SLG
10th .418
.733 9th
OPS
10th .726
1.13 15th
HR/G
3rd 1.48
4.8 7th
R/G
10th 4.7
Pitching 2–3
3.69 5th
ERA
14th 3.90
1.27 17th
WHIP
4th 1.20
8.5 17th
K/9
12th 8.7
3.2 18th
BB/9
2nd 2.6
4.2 11th
RA/G
16th 4.3
Head-to-Head
Red Sox leads 3-2
Final
BOS Red Sox
3
SEA Mariners
1
Final
BOS Red Sox
0
SEA Mariners
8
Final
BOS Red Sox
2
SEA Mariners
0
Final
BOS Red Sox
5
SEA Mariners
1
Final/OT
BOS Red Sox
3
SEA Mariners
4
Recent Form
Red Sox
L vs BAL 2-4
W @ CLE 9-4
W @ CLE 9-1
L @ CLE 3-4
L vs ATL 2-10
Mariners
L vs NYM 1-7
W vs NYM 8-3
W vs NYM 3-2
W vs ARI 3-2
W vs ARI 5-1
Form Comparison
Red Sox vs Mariners
10 20 50
Win-loss trend: each win +1, each loss −1
T-Mobile Park
Seattle, WA, US · 47,929 capacity
League
MLB
Season
MLB 2026
Date
June 21, 2026
Time
8:10 pm