Boston Red Sox vs. Seattle Mariners 6/16/2025 Free Pick & MLB Betting Prediction

Free MLB Pick: Red Sox vs. Mariners Odds

Looking for Boston Red Sox vs. Seattle Mariners Free MLB predictions? MLB betting sees the Red Sox taking on the Mariners on Monday, June 16th, 2024 at T-Mobile Park, in Seattle, WA. Cappers Picks provides complimentary expert handicapping picks on all MLB baseball matchups all season long so stay tuned for more FREE daily MLB predictions like this Red Sox Mariners free pick.

2025 MLB Handicapping – Boston Red Sox vs Seattle Mariners

(37-36) Boston Red Sox vs. Seattle Mariners (36-34)
Date: Monday, June 16th
Time: 9:40 ET
Venue: T-Mobile Park Seattle, WA
Projected Starting Pitchers: Lucas Giolito vs. Logan Gilbert
MLB Moneyline Odds: Red Sox +161 | Mariners -191 (Bet Now!)
Today’s MLB Run Line Betting Odds: Red Sox +1.5 | Mariners -1.5
MLB Baseball Gambling Total: O/U: 7

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Red Sox vs. Mariners Gameday

From T-Mobile Park in Seattle, we have the Red Sox and Mariners facing off in an AL matchup. The Red Sox are currently on a five-game winning streak, and they are 37-36 overall. The Mariners are favored on the money line (-191) and are 36-34 overall, which has them second in the AL West. Logan Gilbert is Monday’s starter for the Mariners, while the Red Sox are sending Lucas Giolito to the mound.

Monday’s over/under line is currently at 7 runs, and NESN will be carrying this game on TV. The Red Sox are +161 on the money line compared to the Mariners at -191. Looking at the AL East standings, the Red Sox are in 4th place.

Boston Red Sox

Rafael Devers was the hero for the Red Sox in their most recent game vs. the Yankees, going 1/3 with a homer and scoring both of Boston’s runs. The Red Sox pulled off the 2-0 upset, as they were the +158 underdog at home. It was a big performance from Brayan Bello, who got the start for the Red Sox, going seven innings and not giving up a run. He also issued just three walks and struck out eight Yankees batters.

Boston’s offense scored their only two runs in the 1st inning and didn Yankees’ starter going just two innings. The Red Sox’s bullpen was excellent, as they didn’t give up a run and closed things out in the 9th with Garrett Whitlock picking up the save.

Boston is on the road today to take on the Mariners, and they come in having won five straight games. The Red Sox are 37-36 overall, putting them 4th in the AL East, 6.5 games behind the Yankees for the division lead. Boston closed the gap on the Yankees by taking three straight games in their most recent series.

At home, the Red Sox are 22-17 this year, and they are just below .500 at 15-19 on the road. As the road underdog, the Red Sox have gone 15-19 this season, and they are on a two-game winning streak as the road underdog. So far, their series record is 12-10-1, and they have won three straight series overall.

Red Sox Stats

So far this season, the Red Sox offense has been one of the best in the league, as they are 5th in runs per game (4.8) and are 6th in home runs and batting average. They are also one of the league’s best teams at avoiding strikeouts and have the best BABIP in the MLB. Boston’s offense is led by Rafael Devers, who is 3rd in the league with 58 RBIs and has a team-high 15 home runs. Devers has a strong on-base percentage of .399 but has hit just .182 over his last nine games.

Over his last nine games, Trevor Story has been swinging a hot bat for the Red Sox, going 13/39 with 10 RBIs. For the season, he is batting .333. Jarren Duran is also swinging the bat well right now, as he is 5/17 in his last nine games. For the season, he is batting .264 and is 2nd on the team with 38 RBIs.

Seattle Mariners

Seattle closed out their series vs. the Guardians with a 6-0 win. Leading up to the game, they were the slight favorite at -124 on the money line. It was a big 2nd inning that really turned things in their favor, as the Mariners scored five runs in the inning. Seattle’s offense was carried by J.P. Crawford, who went 1/3 with a homer and four RBIs.

Emerson Hancock got the start for the Mariners, going seven innings, and didn’t give up a run. He also issued just one walk and struck out four batters. Seattle’s bullpen closed things out with a scoreless 8th and 9th.

Seattle will be hosting the Red Sox today with an overall record of 36-34, which has them 4.5 games behind the Astros for the AL West lead. The Mariners closed out their series vs. the Guardians with three straight wins. So far, they have gone 15-10 in AL West games.

At home, the Mariners are 19-17 this season and an even 17-17 on the road. Seattle has been good as the underdog this season, putting together a mark of 36-34. They have yet to be the favorite in a game this year.

Mariners Stats

Cal Raleigh and Rowdy Tellez are currently tied for 2nd on the Mariners in home runs this season, but both players have struggled to hit for average. Raleigh is batting .263, while Tellez is hitting just .210. Julio Rodriguez has been swinging a hot bat of late, going 14/38 in his last nine games, but he has yet to homer in that stretch. For the season, he is batting .261 with 10 homers.

As a team, the Mariners are averaging 4.4 runs per game and are 7th in the league in home runs. So far, they have been a better offensive team on the road, averaging 4.6 runs per contest. Overall, they are batting .243, which is 14th in the MLB.

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Red Sox Mariners Pitching

Lucas Giolito will be looking to build off his last outing, where he faced the Rays and picked up the win. In that June 10th outing, he went 6 innings and gave up just one earned run. Looking back over his last four outings, Giolito has finished with a no-decision in three of them. His ERA for the season is 5.45, along with a record of 2-1. Opponents have hit .297 off Giolito this season. So far, he has made four quality starts. This year, his ERA at home is 13.21 compared to 2.59 on the road.

Seattle is sending right-hander Logan Gilbert to the mound today vs. the Red Sox. He has made six starts this year and has a record of 1-1 with an ERA of 2.37. Gilbert’s WHIP for the season is currently .79. In his last outing, he finished with a no-decision, going three innings vs. the Marlins. Gilbert didn’t give up a run in that outing. Before that, he had given up at least one earned run in three straight starts. The right-hander has made one appearance on the road and has an ERA of 3.86 in that outing.

Boston Red Sox vs. Seattle Mariners MLB Baseball Betting Trends

• The Red Sox head into the game having gone 4-6 straight-up in their last ten games on the road.
• The Red Sox they are 6-4 vs. the runline in their previous ten games on the road.
• Conversely, the Mariners are 2-8 over their last ten home games (straight-up).
• Furthermore, the Mariners have a 1-9 mark vs. the runline across their last ten home games.
• Also, the Red Sox are 3-0 in their last three games as the favorite. On the other hand, they are 3-0 as the underdog (last 3).
• The Mariners have a record of 2-1 across their last three games when favored. As the underdog, they are 1-2 in their last three games.

Red Sox vs. Mariners Prediction: Over 7 Runs -122

Our predicted final score for this one is a 5-3 win for the Mariners, and with the money line payout sitting at -191, I’d only parlay an M’s straight up win.

However, if you’re looking for a little more value, we would recommend taking the over, with the line sitting at 7. Our projections have the teams combining for 8 runs. It’s a small lean, but I’m not sure Logan Gilbert will have his A-game being his first game back in the big after a long layoff.

Looking at the starting pitchers, we have Gilbert finishing with seven K’s compared to Lucas Giolito with six.

M’s just swept the Guardians in a 3-game set, and I think they keep the good vibes going on Monday night.

Today’s MLB Free Pick

MLB Betting Tweet Of The Day

What an electric weekend at the ballpark ⚡

Let’s keep the good vibes going when the Red Sox come to town tomorrow. #TridentsUp

>> https://t.co/xw4vrUTwRr << pic.twitter.com/EfrgflbYd2

— Seattle Mariners (@Mariners) June 15, 2025

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About Matthew Wiesenfeld

For nearly a two decades the Wiesguy has been helping readers learn and win. Hailing from Toronto, Canada he is a true expert. He is always a little sweet on the underdogs while covering all sports to give you the insight you need to build your bankroll.

Filed Under: MLB Baseball