Shota Imanaga pitched one-run ball into the eighth inning in Chicago’s home opener at Wrigley Field, and the Cubs handed San Diego its first loss with a 3-1 victory over the Padres.

The Cubs offense was on a roll entering their first home series of the year. But on a cold day at Wrigley Field, the team had to answer whether they could continue that momentum in an environment where runs would be scarce.