DENVER (AP) -- Los Angeles Dodgers closer Kenley Jansen is doing well after experiencing trouble with his heart again, though it remains uncertain when he will return to the mound.
Andrew Friedman, the president of baseball operations for the Dodgers, said Saturday everyone feels good about Jansen at the moment. But he wasn't sure when he might be back.
Jansen dealt with issues related to an irregular heartbeat in 2011 and 2012, and the three-time All-Star recognized something wasn't right Thursday as Los Angeles prepared for the opener of a four-game series at Colorado. He was sent back to Los Angeles and has been examined by a number of cardiologists, including some who have treated him in the past.
"It is a pre-existing condition," Friedman said. "The fact that he has experienced it before, we were able to catch it much earlier than he did in 2011 and 2012, which I think is real positive. . He was able to catch it on the front end."
Jansen, who was placed on the 10-day disabled list on Friday, is scheduled for a follow-up appointment with doctors on Aug. 20. Friedman said he might resume some limited baseball activities next week to try to keep his arm in shape.
"When we get to Monday, we will start thinking about the baseball part," Friedman said. "Doing what he can do, what he's able to do. We have 2011, 2012 to look back at. He kept his arm going, stayed in shape during the time he was down."
Added Friedman: "All in all it is encouraging as it could be. He's in a real good frame of mind. We will hold down the fort for him and will be ready to receive him when he's ready."