What happened: Schlittler's first six career starts against Boston produced a 0.47 ERA, counting regular-season and postseason outings. The qualifying window reaches back to 1913, when earned runs became official.
Why it matters: The split aligns with his Game 1 Wild Card Series assignment, with Max Fried and Gerrit Cole slotted behind him. He already beat Boston again in the 2026 playoffs as a Walpole native facing his childhood team.
By the numbers: 1.95 ERA and 0.92 WHIP over 33 starts in 2026, including 20 one-run-or-fewer starts.
What to watch: Watch his next postseason turn for another Boston matchup under October leverage.