Rapid Reaction: Cubs 3, Rockies 1

CHICAGO -- The Chicago Cubs beat the Colorado Rockies 3-1 on Thursday afternoon. Here's a quick look at the game:

How it happened: The Cubs scored all three runs in the sixth inning as Starlin Castro walked with the bases loaded, Justin Ruggiano hit a sacrifice fly and Luis Valbuena grounded out to record the third RBI of the inning. Colorado scored in the seventh on a double by Nolan Arenado. Jake Arrieta earned his sixth win while Hector Rondon notched his 14th save.

What it means: Arrieta continued his dominance with a seven inning, three-hit performance. He gave up one run and struck out seven while walking just one batter. His ERA is 2.11 heading into the final two months of the season.

Russell/Bonifaco say goodbye: Reliever James Russell was seen saying goodbye to teammates on the field during the seventh inning as he and Emilio Bonifacio were traded to the Atlanta Braves for Class-A catcher Victor Caratini.

What's next: The Cubs begin a six-game road trip on Friday starting with a 3-game series against the Los Angeles Dodgers. Kyle Hendricks (1-1, 2.33) faces Dan Haren (8-8, 4.49) in the opener at 9:10 p.m. CT Friday.