Boston: Mookie Betts hit a grand slam on a monster night, leading Chris Sale and the Boston Red Sox over the New York Yankees 14-1 on Tuesday for their ninth straight victory.

Betts went 4 for 4, scoring five runs and driving in four. His third career slam capped a nine-run burst in the sixth inning that turned the first matchup of the season between the AL East rivals into a rout.

Sale (1-0) allowed one run in six innings, striking out eight. Luis Severino (2-1) gave up five runs in five innings.

Aaron Judge had three hits for the Yankees, including his third home run of the season.

Yankees slugger Giancarlo Stanton went 2 for 4. He struck out his first two times up against Sale, and has now fanned 22 times in 46 at-bats.