Brown made another pinch-hit appearance Monday, popping out in foul ground off third base to end the eighth inning.
Sandberg said the left fielder did some light jogging Monday, but didn't hit before the game, as he still felt some soreness.
"But he's heading in the right direction," Sandberg said. "About half better, maybe."
Brown entered play Monday hitting .275 with 27 home runs and 80 RBIs this season for the Phillies.
Chris Iseman is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.