Los Angeles Dodgers reliever Kenley Jansen had surgery Tuesday to correct an irregular heartbeat, according to a Tweet from MLB.com's Ken Gurnick.
Gurnick reported that Jansen would require a three-month recovery, a timeline that would have him ready for the start of spring training.
Jansen, 25, served as the Dodgers' closer for most of the season, and he successfully converted 25 of 31 save opportunities. He was sidelined for most of September due to the heart issue, but he returned to pitch the last two weeks of the season in a setup role.
In early September, Jansen learned that he could put off the surgical procedure, a cardiac ablation, until after the season. He was given blood-thinning medication.
"It's definitely a relief. It's not something you want to worry about," Jansen said at the time.
Jansen finished the year 5-3 with a 2.35 ERA in 65 appearances. He struck out 99 batters and walked just 22 in 65 innings.
Jansen's average of 13.71 strikeouts per nine innings ranked third in the majors among pitchers who threw at least 60 innings, trailing only the Atlanta Braves' Craig Kimbrel (16.66 K's per nine innings) and the Cincinnati Reds' Aroldis Chapman (15.32).