Wander Franco ended Stroman's no-hit bid in the seventh with a flared single to left field.
The Cubs scored their lone run in the fourth inning.
Seiya Suzuki hit an infield single and reached second on third baseman Taylor Walls' throwing error on the play.
Giants 14, Pirates 4Patrick Bailey homered and Mitch Haniger doubled twice in a 13-batter, eight-run seventh inning, helping San Francisco separate from visiting Pittsburgh in the opener of a three-game series.
Diamondbacks 7, Rockies 5Pavin Smith belted a three-run homer to cap a five-run second inning and help Arizona beat Colorado in the opener of their four-game series in Phoenix.