Crowncoin
Home / MLB Predictions / Cincinnati Reds vs Seattle Mariners Predictions

Cincinnati Reds vs Seattle Mariners Predictions

July 21 09:40 PM (Start in 18 Hours)
KIRO T-Mobile Park

Reds vs. Mariners Matchup Overview

The Cincinnati Reds visit T-Mobile Park to take on the Seattle Mariners on July 21st, 2026. The Reds come in with a record of 45-53, while the Mariners sit at 50-50. Check out the current betting odds, with the Reds at +125 on the moneyline and the Mariners at -115. The Edge AI sports betting tool can help you find the best bets for this matchup. Elly De La Cruz is a key player for the Reds, boasting a .282 batting average with 16 home runs and 45 RBIs. Sal Stewart also contributes with a solid .253 average and 20 home runs. For the Mariners, Randy Arozarena leads with a .281 average and 11 home runs, while Julio RodrΓ­guez adds depth with 14 home runs. Luke Raley is listed as questionable for Seattle due to a forearm injury, which could impact their lineup. In their recent meetings, the Mariners have taken the last three matchups against the Reds, making this a crucial game for Cincinnati to turn the tide.

Matchup Overview

  • Teams: Cincinnati Reds vs Seattle Mariners
  • Date: Tuesday, July 21, 2026
  • Time: 9:40 PM
  • Venue: T-Mobile Park

Current Betting Odds

  • Spread: Reds +1.5 (+162) (+1.5 (-220 Hard Rock)), Mariners +1.5 (-200) (+1.5 (-200 ))
  • Total (Over/Under): 7.5 (-111/-110) (Over 7.5 (-110 Hard Rock), Under 7.5 (-110 Hard Rock))
  • Moneyline Odds: Reds -105 (-102 (BetMGM Sportsbook)), Mariners -115 (-115 (Hard Rock))

Edge AI Win Probabilities

After 1,000 simulations, our model gives the Reds a win probability of 49%, while the Mariners have a win probability of 51%

Historically, the Reds and Mariners have had a mixed bag of matchups, with the Reds often relying on their offensive firepower while the Mariners focus on pitching depth. The Reds tend to thrive in hitter-friendly parks, which could tilt the advantage when playing in Seattle’s spacious dimensions. Betting trends suggest that home field can play a significant role here, as the Mariners usually perform better at T-Mobile Park, making this matchup one to watch closely for line movements.

Projected Final Score

Our Edge AI predicts a final score of Mariners 5-4 Reds with a confidence score of 65%. These projections are based on 1,000 simulations and hundreds of data points, ensuring you have the most accurate predictions to inform your betting strategy.

Point Spread
49%
51%
Confidence Level: 72.1%

Unlock for as little as $16.65/month

Unlock
Play Now with Best Odds
Up to $100 Sports Bet Match
Over/Under
49%
51%
Confidence Level: 58.7%

Unlock for as little as $16.65/month

Unlock
Play Now with Best Odds
Up to $100 Sports Bet Match
Moneyline
49%
51%
Confidence Level: 65.4%

Unlock for as little as $16.65/month

Unlock
Play Now with Best Odds
Up to $100 Sports Bet Match

When the Reds and Mariners face off, you’re looking at two teams with different identities. Cincinnati’s offense tends to lean on speed and contact, while Seattle often relies on power and pitching depth. Historically, the Mariners have had the edge at home, but the Reds’ scrappy style can make for tight games, often resulting in fluctuating money lines as bettors gauge each team’s strengths in the matchup.

Cincinnati Reds vs Seattle Mariners Moneyline

The Reds and Mariners are set for a competitive matchup tonight. With the Mariners holding a slight edge in the moneyline odds, the Reds will look to Elly De La Cruz to make an impact. Keep an eye on Luke Raley’s status, as his absence could shift the dynamics for Seattle.

See Game Picks

Cincinnati Reds vs Seattle Mariners Run Line

The Cincinnati Reds, with a road run line of +1.5, could find value against the Seattle Mariners. However, the Mariners, playing at home and with players like Randy Arozarena in the lineup, might have enough firepower to keep the game close. The starting pitchers and late-inning performances will likely play a crucial role in determining the final margin.

See Game Picks

Cincinnati Reds vs Seattle Mariners Over/Under

The Reds and Mariners have been averaging just over 7 runs per game in their recent matchups, indicating some offensive potential. However, with Seattle’s pitching staff showing stronger numbers lately and Cincinnati’s lineup facing some challenges, the total runs in this game could hinge on key moments. Watch how each team’s starters perform, as their effectiveness will likely dictate the final score.

See Game Picks
45-54
All
51-50
22-28
Home
30-21
23-26
Away
21-29
25-17
as Fav
49-45
20-37
as Dog
2-5
50-49
ATS
41-60
20-30
ATS Home
21-30
30-19
ATS Away
20-30
56-41
O/U
49-45
27-23
O/U Home
25-23
29-18
O/U Away
24-22
RESULT
LOSE 8-1
DATE
05/23
SPREAD
β€”
O/U
u9.5
RESULT
LOSE 0-8
DATE
07/20
SPREAD
+1.5
O/U
o7.5
RESULT
WIN 9-6
DATE
07/19
SPREAD
-1.5
O/U
o11.0
RESULT
LOSE 3-10
DATE
07/18
SPREAD
-1.5
O/U
o13.0
RESULT
WIN 7-2
DATE
07/17
SPREAD
-1.5
O/U
u12.0
RESULT
LOSE 6-2
DATE
06/19
SPREAD
-1.5
O/U
o7.0
RESULT
WIN 0-8
DATE
07/20
SPREAD
-1.5
O/U
o7.5
RESULT
WIN 3-6
DATE
07/19
SPREAD
-1.5
O/U
o7.5
RESULT
WIN 3-4
DATE
07/18
SPREAD
-1.5
O/U
o7.0
RESULT
LOSE 7-0
DATE
07/17
SPREAD
-1.5
O/U
o7.0
WHO WON
Mariners logo SEA
RESULT
0-8
DATE
07/20
WHO WON
Mariners logo SEA
RESULT
11-7
DATE
04/17
WHO WON
Mariners logo SEA
RESULT
5-3
DATE
04/16
WHO WON
Reds logo CIN
RESULT
4-8
DATE
04/15
WHO WON
Mariners logo SEA
RESULT
1-5
DATE
04/17

BOX SCORE: MLB TEAM STATS & PLAYER STATS

0
At Bats
0
0
Runs
0
0
Hits
0
0
Walks
0
0
Strikeouts
0
0.310
On Base Percentage
0.308
0.401
Slugging Percentage
0.377
4.58
Earned Run Average
3.61
0
Earned Runs
0
0
Home Runs
0
0
Walks
0
0
Strikeouts
0
0
Strikeouts Per 9 Innings
0
1.43
Walks Plus Hits Per Inning Pitched
1.18
Batters
AVG
HR
RBI
H
0.253
20
70
95
0.246
16
40
81
0.282
16
45
89
0.190
8
25
51
0.210
12
36
53
0.243
16
43
61
0.247
8
27
58
0.249
11
30
51
0.175
3
11
34
0.197
6
13
26
0.236
0
4
25
0.268
3
10
19
0.000
0
0
0
Starting pitcher
W-L
ERA
WHIP
K
11-1
2.54
1.11
118
Pitchers
W-L
ERA
WHIP
K
5-5
4.11
1.42
84
11-1
2.54
1.11
118
4-9
4.56
1.41
82
3-7
5.75
1.64
61
3-2
4.60
1.47
50
3-4
2.89
1.35
40
1-6
4.43
1.35
44
1-0
2.17
0.90
26
2-1
4.08
1.26
26
1-2
4.38
1.10
11
1-0
3.20
1.42
19
2-1
6.23
1.44
18
0-2
2.77
0.92
13
0-0
14.40
3.00
1
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
full roster
Batters
AVG
HR
RBI
H
0.253
8
37
92
0.256
13
48
92
0.256
14
41
90
0.281
11
45
94
0.215
10
28
63
0.163
9
29
41
0.230
15
37
56
0.261
15
40
61
0.195
7
20
30
0.184
4
14
21
0.210
0
5
21
0.220
2
7
13
0.071
0
0
1
Starting pitcher
W-L
ERA
WHIP
K
3-8
4.93
1.37
81
Pitchers
W-L
ERA
WHIP
K
8-6
3.38
0.98
129
7-6
4.16
1.09
109
7-8
3.76
1.32
98
6-4
3.17
1.01
94
3-8
4.93
1.37
81
4-4
2.27
0.88
71
3-2
2.29
1.22
44
3-1
2.85
1.37
35
3-4
3.96
1.21
55
1-2
2.05
1.14
21
0-0
3.54
1.18
9
0-0
4.00
1.72
18
0-2
5.27
1.46
14
0-0
15.43
2.57
0
0-0
36.00
6.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0
0-0
0.00
0.00
0

INJURY REPORT

NAME
POS
STATUS
INJURY
NOTES
POS
RF
STATUS
Questionable
INJURY
Forearm
Notes
Raley is dealing with a forearm injury and is uncertain to take the field for the Mariners.
full roster and injuries