Mariners vs Astros Betting Record — 2021
Against the Spread
6-5-0
Win %
54.55%
ROI
+0.3%
Units
+0.0
Moneyline
7-11-0
Win %
38.89%
ROI
-8.24%
Units
-1.5
Over Rate
8-2-1
Win %
80%
ROI
+52.95%
Units
+5.3
From the Other Side — Astros vs Mariners
Against the Spread
5-6-0
Win %
45.45%
ROI
-3.93%
Units
-0.4
Moneyline
11-7-0
Win %
61.11%
ROI
-2.06%
Units
-0.4
Over Rate
8-2-1
Win %
80%
ROI
+52.95%
Units
+5.3
Venue Splits
Mariners Home
3-2-0 ATS
60% • +11.71%
4-4-0 ML (50%)
Astros Home
3-3-0 ATS
50% • +3.48%
7-3-0 ML (70%)
Scoring Averages
Mariners
4.1
PPG
5.8
allowed
Total
9.8
Avg
18
games
Astros
5.8
PPG
4.1
allowed
Recent Matchups (2021)
| Date | Score | ATS | ML | O/U |
|---|---|---|---|---|
| 09/082021-09-08 | W 5-8 | ✓ | W | O |
| 09/072021-09-07 | L 5-4 | ✓ | L | O |
| 09/062021-09-06 | L 11-2 | ✗ | L | O |
| 08/312021-08-31 | W 4-0 | ✓ | W | U |
| 08/302021-08-30 | L 3-4 | ✓ | L | U |
| 08/222021-08-22 | W 3-6 | ✓ | W | P |
| 08/212021-08-21 | L 15-1 | ✗ | L | O |
| 08/202021-08-20 | L 12-3 | ✗ | L | O |
| 07/282021-07-28 | L 4-11 | ✗ | L | O |
| 07/272021-07-27 | L 6-8 | ✗ | L | O |
| 07/262021-07-26 | W 11-8 | ✓ | W | O |
| 04/292021-04-29 | W 0-1 | - | W | - |
| 04/282021-04-28 | L 7-5 | - | L | - |
| 04/272021-04-27 | L 2-0 | - | L | - |
| 04/262021-04-26 | L 5-2 | - | L | - |
| 04/182021-04-18 | W 7-2 | - | W | - |
| 04/172021-04-17 | L 0-1 | - | L | - |
| 04/162021-04-16 | W 6-5 | - | W | - |
Frequently Asked Questions
What is the Seattle Mariners vs Houston Astros all-time record?
The Seattle Mariners are 7-11 against the Houston Astros in 2021 in head-to-head matchups.
What is the Seattle Mariners ATS record vs the Houston Astros?
The Seattle Mariners are 6-5-0 against the spread vs the Houston Astros in 2021 on DraftKings, with +0.3% ROI.
Do Seattle Mariners vs Houston Astros games go over or under?
Seattle Mariners vs Houston Astros games average 9.8 total points in 2021. The Over has hit 80% of the time.

Inside Edge
