The Red Sox' current rival isn't the Yankees — it's the Orioles
Red Sox Rout Yankees 16-1
Yankees knocked out early by rival Red Sox at Fenway
Yankees and Red Sox benches clear over Tyler Austin's controversial slide
Yankees Pull Even With the Red Sox as Stanton Leads the Way - The New York Times
ALDS preview: Red Sox should dispatch the Yankees in five games - Los Angeles Times
Yankees knocked out early by rival Red Sox at Fenway
Red Sox, Yankees collide in make or break series
Turner Homers Twice, Including Grand Slam, to Help Red Sox Rout Rival Yankees - The Japan News