There is no shortage of history between the New York Yankees and Boston Red Sox. But in the middle of one of baseball’s most enduring rivalries, Cam Schlittler has added fuel to the fire.

Through five career appearances against Boston, including the postseason, Schlittler is 3–1 with a 0.56 ERA across 32⅓ innings. He has allowed just two earned runs while striking out 39 and walking nine, producing a 0.90 WHIP.

For a pitcher who is still establishing himself as one of the game’s elite young starters, that level of dominance against a division rival is remarkable.

For Schlittler, there is an additional layer that makes it even more compelling: Boston was once home.

The Hometown Connection

Schlittler is not simply another Yankees pitcher who happens to pitch well against the Red Sox.

He is a Massachusetts native who grew up a Red Sox fan. The right-hander attended Northeastern University and came through the local baseball scene before the Yankees selected him in the seventh round of the 2022 MLB Draft.

Now, the hometown kid has become one of Boston’s most difficult opponents.

That transformation has produced one of the more unusual storylines in the American League East: a player who once rooted for the Red Sox is now repeatedly taking the mound against them in Yankees pinstripes and consistently winning the matchup.

Boston Has Barely Been Able to Touch Him

Across those five career games, Boston has managed only two earned runs against him. His 39 strikeouts in 32⅓ innings work out to roughly 10.9 strikeouts per nine innings, while his 0.56 ERA illustrates just how little damage the Red Sox have been able to generate.

The dominance has continued into 2026.

On August 28, Schlittler faced Boston for the fourth time during the regular season and delivered another shutout performance, allowing only two hits and striking out eight over 5⅔ innings as the Yankees won 1–0. The outing pushed him past 200 strikeouts for the season and lowered his American League leading ERA to 2.09.

That performance was particularly significant because of the circumstances. The Yankees and Red Sox entered the series separated by only a few games in the American League Wild Card race.

He Wins on the Mound, Then Gives It Back Online

Schlittler has also developed a reputation for engaging with Red Sox fans on social media, particularly when they go after him first. Rather than ignoring the criticism, he has occasionally responded in a way that makes the rivalry even more personal. The dynamic seems perfectly made for the modern sports internet era we currently live in. Red Sox fans always have plenty to say about Schlittler online. Schlittler, in turn, has shown that he is more than willing to give some of it right back, particularly when he has just finished shutting down Boston’s lineup.

Schlittler pitches with an edge, attacks hitters aggressively and doesn’t appear particularly interested in making himself smaller for the sake of an opponent’s feelings. When the Red Sox and Yankees meet, he understands the significance of the matchup and he seems perfectly comfortable embracing the role of villain in Boston.

Boston’s Problem in Pinstripes

At this point, the numbers speak for themselves. Schlittler has been dominant against the Red Sox. And with each start, the rivalry becomes a little more personal.

For a Massachusetts native who grew up rooting for Boston, there is an undeniable irony in becoming one of the biggest problems the Red Sox have to deal with. He has embraced the role, both on the mound and online, where he has shown he is more than willing to answer Red Sox fans who come looking for him.

They have a hometown kid who wears a different uniform, turned into a Yankees ace and seems to enjoy making life miserable for the team he grew up watching.

Cam Schlittler grew up a Red Sox fan. Now, he might just be the Red Sox’s worst nightmare.