BALTIMORE -- Rockies outfielder Gerardo Parra, who has been on the disabled list since June 17 with a sprained left ankle, is set to make his first rehab appearance Friday. Parra, who is currently with the team in Baltimore, will play for Double-A Hartford.
Because he hasn't played in a game in more than a month, manager Walt Weiss expects Parra to need some extra rehab time. The skipper doesn't have a set number of games in mind, though.
"We got to play that one by ear," Weiss said. "He's been out a long time, so we'll see how it goes. But he's going to have to get some at-bats."
When Parra does return, he will join a cluttered outfield, barring any other injuries. The Rockies called up the organization's No. 2 prospect, David Dahl, on Monday to play alongside center fielder Charlie Blackmon and right fielder Carlos González.

Weiss plans to sort that situation out when Parra returns.
"I'm not even concerned with that right now," Weiss said. "We'll figure that out when the time comes. There is still some time between now and then."
Worth noting
• Left-hander Chris Rusin (left shoulder strain) joined the club in Baltimore on Tuesday, but he hasn't been activated. Rusin has started for Triple-A Albuquerque three times and threw 77 pitches in his most recent outing Sunday, when he allowed three runs in 3 2/3 innings.
While Rusin has made seven starts for the Rockies this season, Weiss expects him to return in a long reliever role. It's just a matter of when.
"That's a conversation we got to have," Weiss said. "I think physically he checks out."
• Right-hander Justin Miller, who's been on the disabled list since July 5 with a left oblique strain, is scheduled to throw an inning for Albuquerque on Tuesday. It'll be his first rehab appearance.