CHICAGO (Interstat) — Javier Assad pitched 5 2/3 innings of five-hit ball and the Chicago Cubs erupted for seven runs in the second inning to beat the Colorado Rockies 8-6 on Wednesday at Wrigley Field.

Matt Shaw tripled to drive in two runs and Dansby Swanson added a two-run homer in the decisive frame. The Cubs tacked on a run in the fourth. Colorado scored once in the third and fifth, then pulled within two on Hunter Goodman’s two-run homer in the eighth and added a run in the ninth. Sterlin Thompson homered twice for the Rockies.

Jacob Webb pitched the ninth for his second save. Assad improved to 5-1, while Rockies starter Sean Sullivan took the loss in his major league debut. Attendance was 34,938. Time of game: 2:40. The Cubs improved to 39-36, the Rockies fell to 28-47.