Mariners vs. Red Sox Prediction: MLB Betting Lines & Picks

The Seattle Mariners (54-51) and Boston Red Sox (56-49) clash in the first of a three-game series on Monday at T-Mobile Park, at 9:40 PM ET. The Mariners are coming off a series victory over the Diamondbacks, and the Red Sox a series loss to the Giants.

The Red Sox (+113 underdog moneyline odds) visit the Mariners (-134). The over/under for the game is 8 total runs.

The insights in this article use the latest odds as of July 31, 2023 at 7:13 AM ET. Ready to bet?

Mariners vs Red Sox Betting Lines

Mariners Betting Insights

• This season, the Mariners have won 38 out of the 70 games, or 54.3%, in which they’ve been favored.
• Seattle has entered 47 games this season favored by -134 or more and is 25-22 in those contests.
• The bookmakers’ moneyline implies a 57.3% chance of a victory for the Mariners.
• Seattle and its opponents have hit the over in 51 of its 105 games with a total this season.
• The Mariners are 49-56-0 ATS in their 105 games with a spread this season.

Mariners Last 10 Games Trend

Red Sox Betting Insights

• The Red Sox have been chosen as underdogs in 56 games this year and have walked away with the win 29 times (51.8%) in those games.
• Boston has a mark of 21-14 in contests where bookmakers favor it by +113 or worse on the moneyline.
• The Red Sox have an implied victory probability of 46.9% according to the moneyline set for this matchup.
• Boston and its opponents have gone over in 53 of its 105 games with a total set by sportsbooks this season.
• In 105 games with a line this season, the Red Sox have a mark of 55-50-0 against the spread.

Red Sox Last 10 Games Trend

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Mariners Probable Pitcher – George Kirby

• Kirby and his team are 10-10-0 ATS this season when he starts.
• The right-hander’s last appearance was on Tuesday, when he threw four innings against the Minnesota Twins, giving up five earned runs while allowing seven hits.
• Kirby has 16 starts of five or more innings this season in 20 chances. He averages 6.2 innings per outing.
• In 20 appearances this season, he has finished four without allowing an earned run.
• Kirby’s team is 9-6 this season when he starts and they are the moneyline favorite.
• Kirby’s team has won 11 of his 20 starts.
• In games Kirby has started this season, the teams are 9-11-0 at hitting the over.

Mariners Relief Pitchers

Red Sox Probable Pitcher – Nick Pivetta

• The Red Sox are sending Pivetta (7-5) out to make his ninth start of the season. He is 7-5 with a 4.11 ERA and 100 strikeouts in 81 2/3 innings pitched.
• His last time out came in relief on Tuesday when the right-hander threw five scoreless innings against the Atlanta Braves while giving up three hits.
• Pivetta heads into the matchup with nine outings of five or more innings pitched this campaign.
• He is looking to keep a streak of three games without allowing an earned run intact.
• The Red Sox have been the moneyline underdog in seven of Pivetta’s starts this season, and they went 4-3 in those matchups.
• Pivetta’s team is 4-4 in his eight starts.
• Pivetta’s starts with a set total this season have hit the over in four of eight contests.

Red Sox Relief Pitchers

Mariners Hitting Trends

• The Mariners have hit at least two long balls in 36 games this season, and are 26-10 in those outings.
• Seattle has gone 16-1 in its 17 games this season with at least five extra-base hits.
• The team is 42-22 in the games this season it has totaled at least eight hits.
• Seattle is 47-7 in games this season when it put up five or more runs.
• The Mariners are 25-12 in games this season when they have drawn five or more walks.

Red Sox Hitting Trends

• They’ve hit two or more homers in 34 games this season and are 24-10 in those matchups.
• In 33 games with five or more extra-base hits this season, it has a record of 24-9.
• In 76 games this season with eight or more hits, they have a record of 47-29.
• Boston has won 46 of its 56 games this season in which it scored more than four runs.
• In 23 games this season with five or more walks drawn, they’ve posted a record of 13-10

Mariners vs. Red Sox Prediction

Moneyline Pick: Mariners (-134)
Over/Under Pick: Over (8)

Predictions are calculated by a data-driven algorithm derived from offensive performance metrics and probable starting pitchers.

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