On Saturday, Brown was not in the lineup for the first time since July 31, the day of his callup from Triple-A Lehigh Valley. He pinch-hit for starter Roy Halladay in the seventh inning of Saturday's 4-2 win, striking out against Nationals right-hander Ryan Mattheus.
Brown thinks his left knee might be overcompensating for his right, which he strained in mid-June while playing for the IronPigs. He may have bruised his left knee from diving in the outfield or sliding into home.
"Nothing serious," Brown said before Sunday's series finale against Washington. "It's just a little sore. That's it."
With Monday's off-day, keeping Brown out of the lineup on Sunday gives him three straight days to rest and get ready for Tuesday's series opener against the Mets.
Manager Charlie Manuel said after Sunday's win that he expects Brown to play on Tuesday vs. New York.
Since his recall, Brown has been a regular in the Phillies' outfield, playing 14 games in right field and 10 in left. In 25 total games, he's hit .270 with a home run, seven doubles and 11 RBIs. He's also showed off his strong arm, already leading the team with six outfield assists. That's six off the National League leader, Arizona's Jason Kubel, who has played 79 more games.
"I think I'm doing all right," Brown said. "We're winning games, so that's the big thing."