Red Sox starter Rick Porcello allowed just four hits and one run in five innings of work. The Red Sox bullpen allowed just one hit over the final four innings to earn the 4-3 victory. Boston's Game 4 win completed a 3-1 series victory in the American League Division Series.
J.D. Martinez put the Red Sox on the board with an RBI sacrifice fly in the top of the third inning. Ian Kinsler scored Steve Pearce on an RBI double later in the frame before Eduardo Nunez singled in Kinsler for a 3-0 Red Sox lead.
Christian Vazquez's solo home run in the fourth inning gave Boston a 4-0 advantage.
Brett Gardner plated the Yankees' first score with an RBI sacrifice fly in the bottom of the fifth inning. The Yankees added another run when Craig Kimbrel hit Neil Walker with the bases loaded in the ninth frame. Gary Sanchez closed the gap to one run with an RBI sacrifice fly in the next at-bat.
Kimbrel ended the game by forcing Gleyber Torres into a ground out for the final out of the ninth inning.
The Red Sox now face the Houston Astros in the 2018 American League Championship Series, starting at 8:09 p.m. on Saturday.