Mariners vs Athletics Prediction 9/13/26 MLB Picks Today

In this article, we will formulate a Mariners vs Athletics Prediction for this MLB matchup on Sunday, September 13^th in the third game of this series. Let’s take a look at the prediction for this MLB matchup.

Athletics Preview

The Athletics have a 60-89 record this season and are sitting in the 4th place of the AL West. They have a 28-46 home record and are coming off a 1-19 home loss against the Mariners. They will face the Rays and the Guardians next.

The Athletics have a .245 batting average this season, .318 OBP and .402 Slugging percentage. Oakland’s pitching staff has a 5.41 ERA and 1.50 WHIP. Jeff McNeil is the team’s best hitter with a .268 batting average. Nick Kurtz leads the team in RBI with 69, while Shea Langeliers adds a team-high 23 home runs.

Jacob Lopez (L) is the projected starting pitcher for the Athletics, and he has a 6-4 record, 4.78 ERA and 1.45 WHIP.

Seattle Mariners Preview

The Seattle Mariners have a 70-79 record this season and are sitting in the 3rd place of the AL West. They have a 30-44 away record and are coming off a 19-1 road win against the Athletics. They will face the Angels and the Rockies next.

The Seattle Mariners have a .231 batting average this season, .312 OBP and .379 Slugging percentage. Seattle’s pitching staff has a 4.19 ERA and 1.25 WHIP. Randy Arozarena is the team’s best hitter with a .273 batting average, leading the team in RBI with 71, adding a team-high 23 home runs.

Bryce Miller (R) is the projected starting pitcher for the Mariners, and he has a 4-9 record, 4.22 ERA and 1.14 WHIP.

Seattle Mariners @ Athletics Betting Trends: September 13, 2026

• Probable Starting Pitcher: Jacob Lopez      Record this season: 6-4      ERA: 4.78
• Home Record: 0-3
• Last 5 against Mariners: 1-1

Why the Athletics will win

• The Mariners have lost nine of their last 10 games as road favorites.
• The Athletics have won five of their last six games as home underdogs against AL West opponents following a loss.
• The Mariners have failed to cover the run line in each of their last eight games as favorites against AL opponents following a win.
• The underdogs have covered the run line in 12 of the Mariners’ last 14 games.
• The Mariners have trailed after 5 innings in 10 of their last 12 games as road favorites.
• The Mariners have lost the first inning in five of their last six games as road favorites.
• The Mariners have trailed after 3 innings in four of their last five games as road favorites.

• Probable Starting Pitcher: Bryce Miller      Record this season: 4-9      ERA: 4.22
• Road Record: 3-4
• Last 5 against Athletics: 1-2

Why the Seattle Mariners will win

• The Mariners have won each of their last seven day games against AL West opponents that held a losing record.
• The Athletics have lost nine of their last 10 day games against the Mariners following a home loss.
• The road team has covered the run line in 10 of the Mariners’ last 12 games.
• The Athletics have failed to cover the run line in four of their last five home games against teams that held a losing record.
• The Athletics have trailed after 5 innings in six of their last seven home games against opponents that held a losing record.
• The Mariners have won the first inning in four of their last five road games against AL West opponents that held a losing record.
• The Mariners have led after 3 innings in four of their last five games at Sutter Health Park.

Total Runs Facts

• Nine of the Athletics’ last 10 games against AL West opponents have gone OVER the total runs line.
• Nine of the Mariners’ last 10 road games against AL West opponents 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 10 road games against AL West opponents.
• There has been at least one run scored in the first inning in four of the last five day games between the Mariners and Athletics.

Athletics Player Prop Facts

• Lawrence Butler has hit a home run in two of the Athletics’ last three home games against AL West opponents.
• Jacob Lopez has recorded five or more strikeouts in each of his last six home appearances against opponents that held a losing record.
• Henry Bolte has recorded at least one hit in each of the Athletics’ last seven games.

Seattle Mariners Player Prop Facts

• Randy Arozarena has hit a home run in three of the Mariners’ last five road games.
• Bryce Miller has recorded five or more strikeouts in each of his last six appearances against opponents that held a losing record.
• J.P. Crawford has recorded at least one hit in each of the Mariners’ last 10 games against the Athletics.

Matchup/League Facts

• The Athletics rank 29th in the league for ERA this season (5.41).
• The Athletics rank 29th in the league for opponent batting average this season (.270).
• The Mariners rank 30th in the league for doubles this season (184).
• The Mariners rank 29th in the league for hits this season (1145).

Mariners vs Athletics Prediction

The Athletics are 4-2 in their last 6 meetings against the Mariners but are 1-4 in their last 5 meetings at home.

In this Mariners vs Athletics Prediction, the Mariners are coming as -140 road favorites. I like the A’s in a bounce-back spot today as they will be facing a struggling Bryce Miller, who has been in terrible form, having given up 4+ runs in five of his last six starts and has a 4.69 ERA on the road. On the flip side, Lopez has given up two runs or less in 10 of his last 11 starts and will face a Mariners offense that has been struggling against lefties all season long. Take the A’s in this one for plus money.