Toronto Blue Jays vs Boston Red Sox Starting Lineup — Thursday, Jun 18, 2026

Toronto Blue Jays at Boston Red Sox (2026-06-18). Trey Yesavage vs Sonny Gray at Fenway Park.

Trey Yesavage enters this contest with a 3.78 ERA and 1.26 WHIP over 47.2 innings pitched across nine starts this season, showcasing a notable 8.87 K/9 which indicates his ability to generate swings and misses, but also a higher 4.72 BB/9, suggesting potential for walks to inflate pitch counts or create baserunner traffic. Despite the season-long walk rate, his recent performance metrics indicate a downward trend in ERA, with a 33.3% quality start percentage. Over his last five outings, Yesavage has been particularly effective, posting earned run averages of 0.00, 0.96, 0.68, 1.40, and 1.07, demonstrating strong command and run prevention in these specific appearances. He also notably held the Red Sox scoreless over 5.1 innings in an earlier appearance this year, allowing only four hits. On the opposing mound, Sonny Gray, with a stronger season ERA of 3.03 and 1.20 WHIP across 62.1 innings in twelve starts, has seen his trend ERA move upwards, signaling a recent decline in effectiveness. Gray maintains a respectable 7.36 K/9, relying more on inducing contact, and a more controlled 2.31 BB/9, which minimizes free passes. However, his last five starts reveal struggles, with ERAs of 6.75, 4.50, 2.76, 4.43, and 4.30, indicating a period of inconsistency and higher run allowance, particularly in his most recent outings.

Offensively, the Toronto Blue Jays present a slight advantage with a .702 OPS and 302 runs scored over the season, supported by 72 home runs. The Boston Red Sox offense trails marginally with a .695 OPS and 279 runs, having hit 59 home runs. Both teams exhibit similar overall pitching profiles, with Toronto's staff holding a 4.02 ERA and 1.28 WHIP, allowing 78 home runs, while Boston's bullpen registers a comparable 3.92 ERA and an identical 1.28 WHIP, also allowing 78 home runs. These figures suggest a relatively even matchup in terms of overall team performance, with neither side presenting a dominant statistical edge in the long run.

Recent head-to-head matchups from the 2025 season between these two clubs have been varied, with Toronto holding a 7-6 edge. The scores in these contests have ranged from low-scoring affairs to high-offense contests, indicating no clear historical pattern for game totals, with notable outcomes like a 15-1 score and a 9-0 shutout. The current total line of 8.5 suggests an expectation of moderate scoring for this particular game. This line appears to account for Sonny Gray's recent struggles on the mound, which could open the door for runs, while also considering Trey Yesavage's strong current form, which could limit the Red Sox offense despite their home field advantage at Fenway Park.