Everyone — Yankees fan or not — knows just how impactful hitters like Aaron Judge and Giancarlo Stanton are to any lineup, let alone one that hits for power. And while their importance (plus others like Anthony Rizzo, DJ LeMahieu, and even a player like Harrison Bader) speaks volumes, the Yankees wouldn’t continue to win the American League East without the help of their very strong bullpen.
Michael King and Wandy Peralta are most likely the easiest to pick out of the bunch as the most effective relievers in the Yankees lineup. They consistently eat innings (unfortunately for King, he went down with an injury, but before it he was arguably the best reliever in MLB), and most importantly, they keep runs from getting across the plate.