BOSTON (AP) — Shota Imanaga continued an impressive start to his major league career by pitching one-run ball into the seventh inning to lead the Chicago Cubs to a 7-1 victory over the Boston Red Sox on Friday night.

Signed to a $53 million, four-year deal during the offseason after an eight-year, professional career in Japan, the 30-year-old Imanaga (4-0) beat Boston right-hander Kutter Crawford in a matchup of two pitchers with impressive ERAs.

“Just more of the same,” Cubs manager Craig Counsell said of his left-hander. “Just attacking the strike zone. Again, No. 1, just in the strike zone. That’s how he pitches every single time. ... By being in the strike zone so much you start to get hitters that start to get aggressive on him, and then he’s getting some quick outs.”

Coming off a three-game sweep at Wrigley Field over the Astros, the Cubs rode a two-hit, two-RBI night by rookie Pete Crow-Armstrong for their fifth win in six games. Patrick Wisdom added a pinch-hit, two-run double.