Oakland Athletics vs Seattle Mariners Prediction 9/5/2026 Today’s MLB Picks

In this article, we will formulate an Athletics vs Mariners Prediction for this MLB matchup on Saturday, September 5th in the second game of this series. Let’s take a look at the prediction for this MLB matchup.

Seattle Mariners Preview

The Seattle Mariners have a 66-76 record this season and are sitting in the 3rd place of the AL West. They have a 37-33 home record and are coming off a 6-7 home loss against the Athletics. They will face the Rangers and the Athletics next.

The Seattle Mariners have a .230 batting average this season, .311 OBP, and .376 slugging percentage. Seattle’s pitching staff has a 4.22 ERA and 1.26 WHIP. Randy Arozarena is the Mariners’ best hitter with a .271 batting average, while leading the team in RBI with 66, adding a team-high 22 home runs.

George Kirby (R) is the projected starting pitcher for the Mariners, with a 9-10 record, 4.19 ERA, and 1.35 WHIP.

Athletics Preview

The Athletics have a 56-86 record this season and are sitting in the 4th place of the AL West. They have a 31-42 road record and are coming off a 7-6 road win against the Mariners. They will face the Blue Jays and the Mariners next.

The Athletics have a .248 batting average this season, .321 OBP, and .406 slugging percentage. Oakland’s pitching staff has a 5.45 ERA and 1.50 WHIP. Jeff McNeil is the Athletics’ best hitter with a .271 batting average. Nick Kurtz leads the team in RBI with 69, while Shea Langeliers adds a team-high 23 home runs.

Jeffrey Springs (L) is the projected starting pitcher for the Athletics, with a 3-13 record, 6.37 ERA, and 1.50 WHIP.

Athletics @ Seattle Mariners Betting Trends: September 5, 2026

• Probable Starting Pitcher: George Kirby      Record this season: 9-10      ERA: 4.19
• Home Record: 6-4
• Last 5 against Athletics: 4-0

Why the Seattle Mariners will win

• The Athletics have lost each of their last seven Saturday games against AL opponents that held a losing record.
• The Mariners have won 12 of their last 14 home games against AL West opponents that held a losing record.
• The Athletics have failed to cover the run line each of their last seven Saturday games against AL opponents that held a losing record.
• The Athletics have lost the first inning in three of their last four games.
• The Athletics have trailed after 3 innings in six of their last seven night games.

• Probable Starting Pitcher: Jeffrey Springs      Record this season: 3-13      ERA: 6.37
• Road Record: 1-4
• Last 5 against Mariners: 2-1

Why the Athletics will win

• The Mariners have lost each of their last seven games as favorites against AL opponents.
• The underdogs have won each of the Mariners’ last four games.
• The road team has covered the run line in each of the last eight games between the Athletics and Mariners.
• The Mariners have failed to cover the run line in each of their last 10 Saturday night games as favorites against AL opponents.
• The Mariners have trailed after 5 innings in each of their last four games as favorites against AL West opponents.

Total Runs Facts

• Each of the Athletics’ last six games have gone OVER the total runs line.
• Ten of the Mariners’ last 11 games as favorites against AL West opponents have gone OVER the total runs line.
• There has been at least one run scored in the first inning in eight of the Mariners’ last nine games against AL West opponents.
• There has been at least one run scored in the first inning in seven of Jeffrey Springs’ last eight appearances as a starter.

Seattle Mariners Player Prop Facts

• Cal Raleigh has hit at least one home run in each of his last five appearances against the Athletics after playing the previous day.
• George Kirby has recorded six or more strikeouts in each of his last four appearances against AL West opponents that held a losing record.
• George Kirby has recorded a win in 10 of his last 11 appearances against AL West opponents that held a losing record.
• Jhonny Pereda has recorded at least one hit in each of his eight previous appearances in night games against teams that held a losing record.

Athletics Player Prop Facts

• Zack Gelof has hit a home run in each of the Athletics’ last three games.
• Lawrence Butler has recorded at least one hit in each of the Athletics’ last 16 games against opponents that held a losing record.
• Jeffrey Springs has recorded four or more strikeouts in seven of his last eight appearances with the Athletics as underdogs against AL West opponents.

Matchup/League Facts

• The Mariners rank 30th in the league for runs scored this season (565).
• The Mariners rank 30th in the league for doubles this season (173).
• The Athletics rank 30th in the league for ERA this season (5.45).
• The Athletics rank 30th in the league for runs allowed this season (815).

Athletics vs Mariners Prediction

The Mariners are 4-2 in their last 6 meetings against the Athletics but have lost their last four meetings in Seattle.

In this Athletics vs Mariners Prediction, the Mariners are coming as -245 home favorites. This line makes no sense, as the Mariners are huge -245 favorites and the line is almost 30 cents higher than when they had Gilbert on the mound. The Mariners have lost outright both games, they are now 2-7 in their last 9 games, they have 6+ earned runs in seven of their last nine games and they have a 5+ bullpen ERA in their last 10 games. Kirby has 5+ earned runs in three of his last four starts. For more than twice my money I will take a stab with the A’s on the moneyline in this one.

Nikos Lagouretos's Pick: Athletics +210