Don Mattingly, whose 19-game hitting streak is the longest in the majors this season, hit a tie-breaking, three-run double last night and pinch hitter Don Baylor completed an eight-run fourth inning with a grand slam as the New York Yankees beat the Texas Rangers, 11-7, in New York.

It was the Yankees' seventh victory in eight games.

Mattingly, after almost getting a grand slam when his upper-deck drive missed the right field foul pole, doubled to left center, giving the Yankees a 7-4 lead.

Starter Glen Cook (2-1) walked Dave Winfield intentionally and was replaced by Chris Welsh, who walked pinch hitter Butch Wynegar, reloading the bases. Baylor batted for Dan Pasqua and hit a 1-2 pitch to left for his 15th homer and second grand slam this season. He has hit 10 in his career.

Twins 5, Tigers 1: In Detroit, Mike Smithson pitched a six-hitter for eight innings and Mark Salas doubled home two runs in Minnesota's three-run fifth inning. It was the Twins' fifth victory without a defeat over the defending World Series champions this season.

Smithson (8-7) had a four-hitter going into the ninth before giving up two singles to start the inning. Ron Davis struck out the side in earning his 11th save.