Before the MLB All-Star break, many speculated that the Arizona Diamondbacks would be sellers at the trade deadline. But after the D-backs' sweep of the St. Louis Cardinals in their first series out of the break, Dan Bickley weighs whether GM Mike Hazen and the organization should be buyers or sellers. Diamondbacks dominate Cardinals for much-needed sweep to show their pulse: arizonasports.com/mlb/arizona-diamondbacks/sweep-cardinals/3590716 Subscribe to the Arizona Sports daily newsletter: bit.ly/3QWcj1x Read articles from Arizona Sports: arizonasports.com Download the Arizona Sports app: arizonasports.com/the-arizona-sports-98-7-fm-app Sign up for texts from Arizona Sports: arizonasports.com/text-alerts Listen live to Arizona Sports: arizonasports.com/listen-live Watch live: arizonasports.com/watch-live Follow the team: bit.ly/3R0PIAJ ARIZONA SPORTS SOCIAL MEDIA Facebook: facebook.com/ArizonaSports X: https:...