The dependable bullpen that has been such a key part of San Francisco's even-year championship success this decade is showing its flaws. All-Star Nolan Arenado hit a go-ahead three-run home run in the seventh inning to give Colorado the big hit it has missed for much of the past week, and the Rockies beat San Francisco 7-3 on Tuesday night to end a season-high six-game losing streak. Colorado catcher Nick Hundley and San Francisco's Angel Pagan exchanged words in the seventh during Pagan's at-bat, and Hundley said something as Pagan turned to return to the dugout after a swinging strikeout.