"We want to continue to improve, to be consistent," Mattingly said. "We don't want to see the same mistakes over and over."
Five of the errors are charged to shortstop Hanley Ramirez, who committed 13 last year in 86 games, or a pace of 24 for a 162-game season. His current pace for a 162-game season is 47. Of equal concern is Ramirez's limited range and hesitancy when gripping the ball.
"He's been fine, working good," Mattingly said in defense of Ramirez's fielding. "Guys are what they are, whatever that is. It's not like we're not getting effort."
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.