The hamstring started bothering him in Monday's game against the Marlins. He had trouble running the bases, according to Johnson.
"He said he could probably play. I don't want to take the chance," Johnson said about Zimmerman. "If he pulls that hamstring, I know how long that it takes to heal. These games don't mean that much as far as I'm concerned. His safety is more important."
Zimmerman will finish the season playing in a career-low 101 games, hitting .289 with 12 home runs and 49 RBIs.
Steve Lombardozzi was able to get the start at third base on Tuesday against Florida and most likely will get another start the next day.