Cubs left fielder Kyle Schwarber homered in the top half of the frame to snap an 0-for-13 drought and tie the game at 2. But Chicago right-hander Eddie Butler came undone in the bottom half when he let four straight Padres reach base after recording the first out. All four would score, and Butler exited having allowed six runs on seven hits and three walks in 4 1/3 innings.
The fifth-inning rally made a winner out of Padres No. 10 prospect Dinelson Lamet, who was sharp in his Petco Park debut. The 24-year-old right-hander allowed two runs over five innings while striking out eight for the second start in a row.