Colorado Rockies infielder Chris Nelson is remaining hospitalized for observation after undergoing treatment for an irregular heartbeat.
The Rockies said Nelson's heart was beating normally again after doctors administered a series of shocks during a procedure earlier Tuesday. However, any physical exertion by Nelson will be limited for at least several days. The team placed him on the 15-day disabled list.
Infielder DJ LeMahieu was recalled from the team's Triple-A affiliate in Colorado Springs to fill the roster spot of Nelson, who was batting .256 with five home runs and 23 RBIs in 58 games this season.
In other moves, the Rockies placed infielder Jonathan Herrera on the disabled list with a left wrist infection, apparently caused by his wrist-watch, and recalled outfielder Andrew Brown from their Triple-A club. Right-handed pitcher Juan Nicasio also was moved from the 15-day disabled list to the 60-day disabled list, the day after undergoing surgery on his left knee.