In the D-League this season, Marshall has averaged 19.7 points and 9.6 assists per game for the Delaware 87ers.
The Lakers have struggled with injuries all year. Steve Nash is battling a nagging back injury and isn't set to return for another four weeks. Jordan Farmar tore his hamstring on Dec. 1 and won't return for another week while Steve Blake's elbow injury is expected to keep him out at least another five weeks.
Adding Marshall gives the Lakers a much-needed ball handler. LA was set to start Xavier Henry, who has more career turnovers (110) than assists (92) had they failed to sign another guard.
Los Angeles currently stands at 11th in the Western Conference at 12-13.