Oakland A’s at Seattle Mariners odds, picks and predictions

Analyzing Friday’s Oakland A’s at Seattle Mariners odds and lines, with MLB expert picks, predictions and best bets.

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The Seattle Mariners (20-18) welcome the Oakland A’s (18-21) to T-Mobile Park Friday to kick off their 3-game series. First pitch is set for 9:40 p.m. ET. Let’s analyze FanDuel Sportsbook’s lines around the A’s vs. Mariners odds and make our expert MLB picks and predictions for the best bets.

Season series: First meeting of 2024; Mariners took 12 of 13 last season

The Mariners lost at the Minnesota Twins 11-1 Thursday, closing as +102 underdogs. They have lost 2 in a row and 5 of their last 8. Seattle is 11-8 straight up (SU) at home, 9-10 against the spread (ATS) at home and 18-20 ATS overall.

The A’s wrapped up a 10-game homestand Wednesday, going 6-4 concluding with a doubleheader split vs. the Texas Rangers. They won the first 5 games of the stand but went 1-4 in the final 5 games. They won Wednesday’s opener 9-4 as slight +104 underdogs and lost the nightcap 12-11 as +130 dogs — covering the run line in both games. Oakland is 8-8 SU and 10-6 ATS on the road, while going 22-17 ATS on the season.

A’s at Mariners projected starters

RHP Paul Blackburn vs. RHP Bryan Woo

Blackburn (3-1, 3.00 ERA) makes his 8th start. He has a 1.02 WHIP, 2.1 BB/9 and 6.6 K/9 through 42 innings.

  • Last start: Win, 7 IP, 1 ER, 4 H, 1 BB, 3 K in 20-4 home rout of Miami Marlins Saturday
  • 2024 road splits: 1-1, 5.63 ERA (16 IP, 10 ER), 15 H, 4 HR, 1 BB, 14 K in 3 starts
  • Career vs. Mariners: 2-4, 4.91 ERA (40 1/3 IP, 22 ER), 1.39 WHIP, 6.0 K/9 in 8 starts, including 0-1 (5 IP, 2 ER) in 1 start last season

Woo (4-5, 4.21 ERA in 2023) makes his 1st start. He had a 1.21 WHIP, 3.2 BB/9 and 9.5 K/9 through 87 2/3 IP in 18 starts last season, which was his rookie campaign.

  • Career home splits: 2-2, 3.31 ERA (35 1/3 IP, 13 ER), 1.10 WHIP, 11.5 K/9 in 7 starts
  • Career vs. A’s: 2-0, 0.00 ERA (11 IP, 0 ER), 1.00 WHIP, 6 H, 5 BB, 11 K in 2 starts

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A’s at Mariners odds

Provided by FanDuel Sportsbook; access USA TODAY Sports Scores and Sports Betting Odds hub for a full list. Lines last updated at 3:31 p.m. ET.

  • Moneyline (ML): A’s +130 (bet $100 to win $130) | Mariners -154 (bet $154 to win $100)
  • Run line (RL)/Against the spread (ATS): A’s +1.5 (-170) | Mariners -1.5 (+140)
  • Over/Under (O/U): 7.5 (O: -105 | U: -115)

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A’s at Mariners picks and predictions

Prediction

Mariners 5, A’s 4

Moneyline

LEAN MARINERS (-154).

The Mariners have played well at home recently, beating the Braves in 2 of 3 and the Diamondbacks in 2 of 3 in their last homestand. They swept the Reds in 3 in the home series prior.

The A’s, after snapping a 6-game winning streak in early May, have lost 4 of their last 5 games. They have allowed at least 4 runs in Blackburn’s last 3 starts. For a small unit, take MARINERS (-154).

Run line/Against the spread

PASS.

The Mariners -1.5 (+140) are too risky as a run-line favorites. As mentioned, they’re 9-10 ATS at home and 18-20 ATS overall.

The A’s +1.5 (-170) are too expensive to take as underdogs, especially having struggled to cover as of late.

Over/Under

BET OVER 7.5 (-105).

The A’s have gone Over in Blackburn’s last 2 starts and have topped the projected total in 3 straight games and in 5 of their last 6. Oakland has scored at least 8 runs in 3 straight games as well.

The Mariners might be 11-25-2 O/U on the season but have gone Over in 3 straight games, allowing at least 6 runs in each of those contests. Woo could have some rust as well, making his 1st start of the season.

Seattle has scored 14 runs over its last 3 games, so its offense has been solid as well.

Back OVER 7.5 (-105).

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