Athletics vs Seattle Mariners Prediction 9/4/2026 Today’s MLB Picks
Chris Ruffolo
Aug 31, 2026; Boston, Massachusetts, USA; Seattle Mariners shortstop J.P. Crawford (3) and left fielder Randy Arozarena (56) react after scoring a run against the Boston Red Sox during the sixth inning at Fenway Park. Mandatory Credit: Brian Fluharty-Imagn Images
MATCHUP
Oakland Athletics
Seattle Mariners
Team Records
42-57
66-75
Spread
+1.5 -120
-1.5 100
Moneyline
+184
-226
Total
Over 7 (-118)
Under 7 (-102)
Where
T-Mobile Park, Seattle, Washington
When
Friday, September 4, 2026
Time
10:10 PM EDT
TV
MLB.TV
The Athletics and the Seattle Mariners meet Friday in MLB action from T-Mobile Park. We will look at this from a betting perspective and determine the best bets for this game. Here’s an Athletics vs. Seattle Mariners prediction.
Starting Pitching Matchup
The Athletics will send out Kade Morris for the start here and Morris is 0-1 with a 9.82 ERA and 10 strikeouts this season. Logan Gilbert will start for Seattle and is 11-8 with a 3.42 ERA and 166 strikeouts this season.
Athletics Recap
The Athletics come into this game looking to add on to their 7-4 win over the Seattle Mariners last time out to sit at 55-86 this season. After this series, the Athletics will head home for a series against the Toronto Blue Jays.
Athletics Win Back-To-Back Games
Going into Thursday, Shea Langeliers has 99 hits with 19 doubles, 23 home runs and 51 RBIs while Tyler Soderstrom’s added 97 hits with 27 doubles, 3 triples, 19 home runs and 56 RBIs. Jacob Wilson also has 85 hits with 16 doubles, 7 home runs and 37 RBIs and Nick Kurtz has 90 hits with 15 doubles, 21 home runs and 69 RBIs this season. Jeff McNeil also has 107 hits with 19 doubles, 7 home runs and 49 RBIs.
Seattle Mariners Recap
The Seattle Mariners come into this game looking to bounce back from their loss to the A’s on Thursday to sit at 67-74 this season. After this series, the Mariners will head home for a series against the Texas Rangers.
Mariners Have Two-Game Win Streak Snapped
Entering Thursday, Luke Raley has 15 home runs and 39 RBIs this season. Cole Young’s added 124 hits with 16 doubles, 3 triples, 16 home runs and 57 RBIs and Cal Raleigh has 64 hits with 10 doubles, 20 home runs and 56 RBIs as well this season. Randy Arozarena has 134 hits with 27 doubles, 22 home runs and 66 RBIs as well on the year. Josh Naylor also has 136 hits with 19 doubles, 10 home runs and 48 RBIs as well on the year. Julio Rodriguez has also added 125 hits with 20 doubles, 20 home runs and 58 RBIs.
Athletics @ Seattle Mariners Betting Trends: September 4, 2026
Probable Starting Pitcher: Logan Gilbert Record this season: 11-8 ERA: 3.42
Home Record: 8-4
Last 5 against Athletics: 3-0
Why the Seattle Mariners will win
The Mariners have won 12 of their last 13 home games against AL West opponents that held a losing record.
The Athletics have lost 10 of their last 12 night games following a win.
The Athletics have failed to cover the run line in four of their last five night games against AL opponents following a road win.
The Mariners have covered the run line in six of their last eight games against AL West opponents following a loss.
The Athletics have trailed after 3 innings in each of their last six night games.
The Athletics have trailed after 5 innings in five of their last six night games.
The Athletics have lost the first inning in four of their last five road games.
Probable Starting Pitcher: Kade Morris Record this season: 0-1 ERA: 9.82
Road Record: 0-1
Last 5 against Mariners: –
Why the Athletics will win
The Mariners have lost each of their last six games as favorites against AL opponents.
The underdogs have won four of the Mariners’ last five games.
The Mariners have failed to cover the run line in each of their last 10 Friday home games.
The road team has covered the run line in each of the last seven games between the Athletics and Mariners.
The Mariners have trailed after 5 innings in five of their last six games as favorites against AL opponents.
The Mariners have lost the first inning in three of their last four games as favorites against AL West opponents.
Total Runs Facts
Nine of the Mariners’ last 10 games as favorites against AL West opponents have gone OVER the total runs line.
Each of the Athletics’ last five games have gone OVER the total runs line.
There has been at least one run scored in the first inning in each of the Mariners’ last eight games against AL West opponents.
There has been at least one run scored in the first inning in each of the Athletics’ last five games at T-Mobile Park.
Seattle Mariners Player Prop Facts
Cal Raleigh has hit at least one home run in each of his last four appearances against the Athletics after playing the previous day.
Logan Gilbert has recorded a win in each of his last six home appearances against opponents that held a losing record.
Logan Gilbert has recorded seven or more strikeouts in each of his last eight home appearances against opponents that held a losing record.
Julio Rodriguez has recorded at least one hit in each of the Mariners’ last eight games against the Athletics.
Athletics Player Prop Facts
Donnie Walton has hit a home run in three of his last four road appearances against AL West opponents that held a losing record.
Lawrence Butler has recorded at least one hit in each of the Athletics’ last 15 games against opponents that held a losing record.
Matchup/League Facts
The Mariners rank 30th in the league for runs scored this season (559).
The Mariners rank 30th in the league for doubles this season (170).
The Athletics rank 30th in the league for ERA this season (5.44).
The Athletics rank 30th in the league for runs allowed this season (809).
Athletics vs. Seattle Mariners Prediction
I’m backing the Mariners here. Originally it was supposed to be JT Ginn for the A’s which had me leaning towards the first five innings under, but with Morris starting, I think the Mariners bats can get to him and Gilbert is the far better starting option in this game. I think Seattle finds a way to get it done in this game so give me Seattle.
