Oakland Athletics vs Seattle Mariners Prediction 9/3/2026 Today’s MLB Picks

In this article, we will formulate an Athletics vs Mariners Prediction for this MLB matchup on Thursday, September 3rd in the opening game of this series. Let’s take a look at the prediction for this MLB matchup.

Seattle Mariners Preview

The Seattle Mariners have a 66-74 record this season and are sitting in 3rd place of the AL West. They have a 37-31 home record and are coming off an 8-3 road win against the Red Sox. They will face the Athletics and the Rangers next.

The Seattle Mariners have a .229 batting average this season, .309 OBP, and .376 slugging percentage. Seattle’s pitching staff has a 4.18 ERA and 1.25 WHIP. Randy Arozarena is the Mariners’ best hitter with a .272 batting average, while leading the team in RBI with 66, adding a team-high 22 home runs.

Kade Anderson (L) is the projected starting pitcher for the Mariners, with a 0-0 record, 4.50 ERA, and 1.30 WHIP.

Athletics Preview

The Athletics have a 54-86 record this season and are sitting in 4th place of the AL West. They have a 29-42 road record and are coming off a 9-2 road win against the Rangers. They will face the Blue Jays and the Mariners next.

The Athletics have a .246 batting average this season, .320 OBP, and .402 slugging percentage. Oakland’s pitching staff has a 5.45 ERA and 1.50 WHIP. Jeff McNeil is the Athletics’ 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.

Jack Perkins (R) is the projected starting pitcher for the Athletics, with a 3-10 record, 6.42 ERA, and 1.49 WHIP.

Athletics @ Seattle Mariners Betting Trends: September 3, 2026

• Probable Starting Pitcher: Kade Anderson      Record this season: 0-0      ERA: 4.50
• Home Record: 0-0
• Last 5 against Athletics: –

Why the Seattle Mariners will win

• The Mariners have won each of their last 12 home games against AL West opponents that held a losing record.
• The Athletics have lost 10 of their last 11 night games following a win.
• The Mariners have covered the run line in each of their last six games against the Athletics at T-Mobile Park following a road win.
• The Athletics have failed to cover the run line in each of their last four night games against AL opponents following a road win.
• The Athletics have lost the first inning in three of their last four road games.
• The Athletics have trailed after 3 innings in each of their last five night games.
• The Athletics have trailed after 5 innings in each of their last five night games.

• Probable Starting Pitcher: Jack Perkins      Record this season: 3-10      ERA: 6.42
• Road Record: 2-4
• Last 5 against Mariners: 0-0

Why the Athletics will win

• The Mariners have lost each of their last five games as favorites against AL opponents.
• The underdogs have won three of the Mariners’ last four games.
• The Mariners have failed to cover the run line in 12 of their last 13 games as favorites against AL opponents.
• The road team has covered the run line in each of the last six games between the Athletics and Mariners.
• The Mariners have lost the first inning in each of their last three games as favorites against AL West opponents.
• The Mariners have trailed after 3 innings in three of their last four games against opponents that held a losing record.
• The Mariners have trailed after 5 innings in four of their last five games as favorites against AL opponents.

Total Runs Facts

• Eight of the Mariners’ last nine games as favorites against AL West opponents have gone OVER the total runs line.
• Each of the Athletics’ last four 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 seven games against AL West opponents.
• There has been at least one run scored in the first inning in each of the Athletics’ last four 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.
• 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

• Lawrence Butler has recorded at least one hit in each of the Athletics’ last 14 games against opponents that held a losing record.
• Donnie Walton has hit a home run in two of his last three road appearances against AL West opponents that held a losing record.

Matchup/League Facts

• The Mariners rank 30th in the league for runs scored this season (555).
• The Mariners rank 30th in the league for hits this season (1061).
• 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 (805).

Athletics vs Mariners Prediction

The Mariners have won their last four meetings against the A’s but have lost two of their last three meetings in Seattle.

In this Athletics vs Mariners Prediction, the Mariners are coming as -200 home favorites. The Mariners are rightfully favored as they are the far better team, but the price is too high and the safer bet is on the total. The Mariners are coming off a series sweep against the Red Sox where they scored 25 runs in three games and the A’s are 7-3 to the over in their last 10, while having the worst bullpen ERA in baseball. Jack Perkins has given up 5+ runs in three of his last four starts and Kade Anderson has given up 5 runs in 9.3 innings pitched. The line is too low. Take the over 7.5 runs.

Nikos Lagouretos's Pick: Over 7.5