Red Sox vs Mariners MLB Player Prop Picks (Jun 16)

First pitch is at 9:40 p.m. ET at T-Mobile Park as the Mariners (36–34) host the Red Sox (37–36) tonight in a crucial divisional contest. Boston brings a modest road trip surge, while Seattle returns home after a three-game sweep of Cleveland. Both teams are keen to swing momentum in mid‑June.

• Starting pitchers: Lucas Giolito (BOS, 2–1, 5.45 ERA, 31 K in 39.2 IP) vs. Logan Gilbert (SEA, 1–1, 2.37 ERA, 44 K in 30.1 IP).
• Seattle holds a 58% win probability according to MLB’s analytics.
• Boston has won four straight; Seattle finished a three-game sweep of Cleveland.

Boston Red Sox Player Prop Pick: Lucas Giolito

Boston has rebounded with four wins in five, surging behind hot bats like Rafael Devers and Alex Bregman (.299/.385/.553). Their offense leads the AL East in runs per game this month, though the bullpen remains a concern, converting just over half of save opportunities, and the team ERA stands near 4.02.

• A contact-heavy pitcher, Giolito has never exceeded five strikeouts this season.
• Mariners rank in the top half in making contact and avoiding strikeouts.
• His skill set suggests a floor of weak contact, not swing‑and‑miss outcomes.

Seattle Mariners Player Prop Pick: Logan Gilbert

Seattle returns home fueled by a three-game sweep. Their lineup is led by Cal Raleigh (26 HR, .263 avg) and J.P. Crawford (.296 avg). Logan Gilbert has been strong at home with a 0.79 WHIP and 44 strikeouts in just over 30 innings.

• Gilbert averages 13.1 K/9 with a .79 WHIP—projecting seven or more strikeouts over six innings .
• He’s struck out at least six batters in each of his first five starts.
• Facing a Red Sox team that struggles with lefties, he should have ample whiff opportunities.