The Los Angeles Dodgers expect closer Kenley Jansen to miss about a month with an irregular heartbeat, according to a report from ESPN's Buster Olney.
The 30-year-old right-hander went to the hospital with the issue before the Dodgers' game at the Colorado Rockies on Thursday.
After the 8-5 victory, Dodgers manager Dave Roberts told reporters that Jansen didn't feel right at the team's hotel earlier in the day and called the trainer.
Jansen, who has dealt with an irregular heartbeat in the past, was sent to Los Angeles to visit his cardiologist. Sources told Olney the team expects to be without him for around 30 days.
The Dodgers turned to reliever Scott Alexander to close Thursday night's victory in the place of Jansen, who is tied for the National League lead with 32 saves so far this season.
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