The Dodgers reinstated Nelson (back) from the 10-day injured list prior to Sunday's game against the Rockies.
Los Angeles placed outfielder Mookie Betts (hip) on the 10-day injured list in a corresponding move. Nelson was sidelined for just over two weeks with a left lumbar strain. The 32-year-old reliever owns a 2.00 ERA, 0.93 WHIP and 41:13 K:BB across 27 innings this season.