Anderson, 31, has a career 4.60 ERA over six seasons in the Majors, including four years with the Rockies, and one each with the Giants and Pirates.
Anderson has been consistent this season, tossing at least five innings in each of his 18 starts this season while going 5-8 with a 4.35 ERA. He'll be a free agent after this season.
In exchange for Anderson, the Phillies dealt away catcher Abraham Gutierrez and right-hander Cristian Hernandez.
Gutierrez, 21, was hitting .273 with Class-A Clearwater with five homers and 29 RBIs.
Hernandez, 20, posted a 2-5 record with Clearwater to go along with a 3.45 ERA.
It appears Anderson will take Vince Velasquez's spot in the starting rotation. Velasquez surrendered six runs in 2 1/3 innings on Saturday and is carrying a 5.54 ERA over 79 2/3 innings this season.
