Shortly after the Giants purchased Duffy's contract from Double-A Richmond last Friday, Bochy said that the 23-year-old would play at least semi-regularly for the Giants, mostly at second base. Then Panik went 8-for-14 in a three-game stretch, contrasting with Duffy's 1-for-10.
"Joe's been playing so well, it's hard to find time for [Duffy]," manager Bruce Bochy said.
Meanwhile, Panik has impressed the Giants with his poise as well as his production.
"He's a solid player," Bochy said. "He does a good job defensively; he doesn't miss signs; he's not a speedster, but he's a good baserunner. He knows how to play the game."
Chris Haft is a reporter for MLB.com. Read his blog, Haft-Baked Ideas, and follow him on Twitter at @sfgiantsbeat. This story was not subject to the approval of Major League Baseball or its clubs.