Didi's 3-run HR gets Yanks going at Fenway

Gregorius' 3-run home run BOSTON -- Didi Gregorius set the tone for the Yankees' pivotal four-game series in Boston in his first at-bat against the Red Sox on Thursday night at Fenway Park.

With Aaron Hicks on second and Giancarlo Stanton on first, Gregorius stepped up to the plate with no outs for the Yankees, and he crushed a three-run home run on Brian Johnson's 88.3-mph fastball on a 2-0 count, giving New York a 3-0 lead.

View Full Game Coverage

Mookie Betts chased the ball as it sailed a projected 383 feet, per Statcast™. But it flew too far for him to catch -- landing in the Red Sox's bullpen.

It was Gregorius' 19th home run of the season. The hit also marked his first home run since his…