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04/25/12 9:00 PM ET

Dinged up Rivera, Harang show improvement

LOS ANGELES -- Dodgers Juan Rivera (strained left hamstring) and Aaron Harang (bruised left foot) reported improvement Wednesday in their respective injuries suffered Tuesday night.

Rivera, who strained a left hamstring running out a sixth-inning infield single, was out of the lineup Wednesday night but took batting practice. Manager Don Mattingly said the outfielder won't be placed on the disabled list if he is able to pinch-hit and run for himself by the weekend.

"He was getting tonight off anyway after playing five or six straight, and Sue [Falsone, trainer] said he was able to do more than she thought he would," said Mattingly. "He's day to day. If it lingers, we'll think about doing something different."

Rivera said he's on medication and his leg felt better than it did when he left the ballpark Tuesday night. He said it had bothered him prior to Tuesday, but he shut it down when he felt it worsen running to first base.

Harang said he did not expect to miss his scheduled bullpen session on Friday in preparation for his next start, Monday in Denver. He fouled a pitch off his foot in a third-inning at-bat, and it swelled as the game went on. He was removed after six innings.

"It's sore, like any bruise," said Harang.

Coffey, Belisario get to work at Class A

LOS ANGELES -- Dodgers relievers Todd Coffey and Ronald Belisario made Minor League rehab appearances on Wednesday night for Class A Rancho Cucamonga.

Coffey, on the disabled list with what was announced as right knee inflammation, started the game and allowed one run on two hits in one inning. He also is scheduled to pitch an inning on Friday night and is eligible to be activated Sunday.

Belisario is serving a 25-game suspension for violating the MLB drug policy. He pitched the second inning, allowing one run on a hit. He is eligible to return May 4 and is out of options.

Mattingly calls for improved baserunning

LOS ANGELES -- Dodgers manager Don Mattingly called a position-players meeting Wednesday to discuss growing concern over poor baserunning.

Mattingly said the issues were more involved than just basestealing, but also involved pre-pitch preparation regarding defensive positioning, awareness of game situations and when to be aggressive.

"There's been a sense of concern," said Mattingly. "Last year, we ran the bases well. This year, we've made too many mistakes. We've gotten away with it because we've been winning, but it's an area we need to improve.

"It's been brewing, not just the last couple of days. I don't think we're good enough to give away outs. We've made a lot of bad decisions and a lot of stuff hasn't been noticed because we've won games."

The timing of the meeting comes the day after Matt Kemp was retired twice after reaching first base safely, once when he was doubled up after second baseman Dan Uggla made a difficult catch of a pop fly, the other time when Kemp made a false move toward second base after beating a throw to first in the dirt.

Mattingly, however, excused both of those situations and said he actually called the meeting Monday. As for stealing bases, the Dodgers are ninth in the league with 12 stolen bases, but they have been caught a league-high 11 times.

Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.