Putz blew his third save of the year Tuesday when Brandon Belt hit a hanging split for a two-run homer in the ninth inning.
Last week in New York, Francisco Cervelli hit a hanging split for a game-tying homer.
"He threw two fastballs right by Belt then hung two splits," Gibson said. "His command is not as good as it has been in the past, so he's going to try and clean some stuff up. It's more about location for him at this point in his career."
Gibson was not sure if Putz would be available for Wednesday's series finale with the Giants given his recent workload, but he left no doubt what Putz's role would be.
"He'll close if he's available today," Gibson said.
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.