Mariners vs. Red Sox Dunkel MLB Picks, Predictions and Prop Bets - June 20

The Boston Red Sox are looking for another big outing from a hitter on a hot streak versus the Seattle Mariners on Saturday at 10:10 p.m. ET, at T-Mobile Park. Caleb Durbin is currently on a two-game homer streak. Emerson Hancock (5-3, 3.28 ERA) gets the start for the Mariners, who are 39-38 this season and first in the AL West. Connelly Early (5-5, 3.81 ERA) is expected to start for the Red Sox, who are 30-43 and fifth in the AL East.

With the Red Sox (+104) visiting, the Mariners (-126) are a solid favorite on the moneyline. The total in this contest is set at 7.5.

Mariners vs. Red Sox Odds, Game Time

• Game day: Saturday, June 20, 2026
• Game time: 10:10 p.m. ET
• Location: Seattle, Washington
• Stadium: T-Mobile Park
• Favorite: Mariners (-126)
• Underdog: Red Sox (+104)
• Over/under: 7.5

How to Watch Mariners vs. Red Sox

• TV Channel: SEAM and NESN
• Live Stream: Fubo (Watch for free)

Bet now on FanDuel Sportsbook!

Mariners vs. Red Sox: Betting the Moneyline

• The Mariners have put together a 37-33 record in games they were listed as the moneyline favorite (winning 52.9% of those games).
• Boston has come away with 11 wins in the 27 contests it has been listed as the underdogs in this season.
• This season Seattle has won 32 of its 53 games, or 60.4%, when favored by at least -126 on the moneyline.
• This season, the Red Sox have been victorious five times in 18 chances when named as an underdog of at least +104 or longer on the moneyline.
• Based on this game's moneyline, the Mariners' implied win probability is 55.8%.
• The moneyline set for this matchup implies the Red Sox have a 49% chance of walking away with the win.

Mariners vs. Red Sox: Betting the Spread & Total

• The Mariners have played in 77 games with a set over/under, and have combined with their opponents to go over the total 38 times (38-36-3).
• Boston's games have gone over the total in 32 of its 73 chances.
• The Mariners have covered just 37.7% of their games this season, going 29-48-0 ATS.
• In 73 games with a line this season, the Red Sox have a mark of 30-43-0 against the spread.