Billingsley, who had been slated to start, has pain in his right elbow. He finished last season on the DL with right elbow pain and was on the disabled list from March 31 to April 10 with a bruised right index finger. He's 1-0 with a 3.00 ERA in two starts this season.
Fife, a right-hander, was 1-1 with a 4.61 ERA in three starts at Albuquerque this year after going 0-2 with a 2.70 ERA in five starts with the Dodgers in 2012.
The Dodgers have three other starters on the disabled list : Zach Greinke (left fractured clavicle), Chris Capuano (left calf strain) and Ted Lilly (left shoulder surgery).