But Mattingly reminded reporters that Guerrero is in the Minor Leagues to learn how to play second base.
"That kind of stuff doesn't happen overnight," he said. "Eight games, you're not going to see much difference in that amount of time."
Guerrero, signed to a four-year, $28 million deal, played shortstop exclusively until signing with the Dodgers last year.
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.