The Astros optioned Kemp to Triple-A Fresno following Friday's game.
Kemp posted a respectable .753 OPS in limited action this month, but he was taken off the big league roster to open up a roster spot for A.J. Reed, who will be promoted to the majors Saturday. With Kemp holding his own in his first go-around at the top level, there is a good chance he rejoins the Astros at some point later this summer.