Boston Red Sox at Seattle Mariners odds, picks and predictions

Analyzing Friday’s Boston Red Sox at Seattle Mariners odds and lines, with MLB expert picks, predictions and best bets.

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The Boston Red Sox (1-0) take on the Seattle Mariners (0-1) Friday in the 2nd game of a 4 game weekend series to start the season. First pitch at T-Mobile Park is scheduled for 9:40 p.m. ET.  Let’s analyze FanDuel Sportsbook’s lines around the Red Sox vs. Mariners odds and make our expert MLB picks and predictions for the best bets.

The Red Sox got past the Mariners on Opening Day Thursday, winning 6-4 and cashing as +146 road underdogs. 3B Rafael Devers and RF Tyler O’Neill homered for Boston, and SP Brayan Bello earned the win, allowing 2 ERs on 5 hits with 2 K’s in 5 innings.

RF Mitch Haniger and LF Dylan Moore were the only 2 Mariners to drive in runs as both clubbed 2-run HRs. SP Luis Castillo was credited with the loss as he allowed 4 ERs while striking out 5 in 5 innings.

Red Sox at Mariners projected starters

RHP Nick Pivetta vs. RHP George Kirby

The 31-year-old Pivetta went 10-9 in 2023, and his boot from the rotation paid dividends as he pitched to a 1.08 ERA over his first 17 appearances out of the bullpen. Among qualified pitchers in spring training, Pivetta had the best Stuff+ at 140.

  • 2023 road splits: 4-3, 3.56 ERA (73 1/3 IP, 29 ER) in 19 games, including 8 starts
  • 2023 vs. Mariners: 1-1, 4.97 ERA (12 2/3 IP, 7 ER) in 2 starts
  • Career vs. Mariners: 1-1, 4.34 ERA (18 2/3 IP, 9 ER) in 3 starts

Kirby went 13-10 with a 3.35 ERA in his 2nd season as a Mariners starter. The 20th overall pick in 2019, who was named to his 1st All-Star Game last season, sported the lowest BB/9 (0.90) among all qualified MLB a year ago.

  • 2023 home splits: 8-4, 2.70 ERA (93 1/3 IP, 28 ER) in 15 starts
  • 2023 vs. Red Sox: 1-0, 1.54 ERA (11 2/3 IP, 2 ER) in 2 starts
  • Career vs. Red Sox: 1-1, 4.15 ERA (21 2/3 IP, 10 ER) in 4 starts

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Red Sox 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 6:15 p.m. ET.

  • Moneyline (ML): Red Sox +120 (bet $100 to win $120) | Mariners -142 (bet $142 to win $100)
  • Run line (RL): Red Sox +1.5 (-182) | Mariners -1.5 (+150)
  • Over/Under (O/U): 7 (O: -122 | U: +100)

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Red Sox at Mariners picks and predictions

Prediction

Red Sox 3, Mariners 2

Moneyline

BET RED SOX (+120).

Boston has the better bats and Pivetta may have finally figured out how to pitch consistently well. Seattle had the 2nd-highest K% (25.9%) in all of MLB last season, and while the leaders in that category for the Mariners last year (3B Eugenio Suarez, OF Teoscar Hernandez) are gone, so are their power bats at the plate.

Boston features plenty of brute in the heart of their order with Devers and 1B Triston Casas, who had an RBI in the 5th inning Thursday. Plus, the Red Sox had the 7th-most total bases last season (2,360), so even though Kirby should be in control of the plate, Boston should still be able to generate enough offense to pick up the win once again.

Run line/Against the spread

PASS.

Too much juice to take Boston +1.5 (-182) here. Seattle may not have Suarez and Hernadez anymore, but C Cal Raleigh is still behind the plate and CF Julio Rodriguez remains a young phenom.

Over/Under

BET UNDER 7 (+100).

FantasyPros rates T-Mobile Park as the 3rd-lowest for run production, and both of these starters are capable of shutting down bats. The Mariners feature a bullpen that finished with the 2nd-lowest ERA in the AL last season, so expect Boston to get their runs in the middle portion of the game.

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