Kepler started in left field, batted sixth and went 0-for-2 in Friday's 6-1 loss to the Rays.
Kepler made his Diamondbacks debut after serving an 80-game suspension for testing positive for a performance-enhancing substance. He was eventually lifted for a pinch hitter when a lefty reliever entered the game in the sixth inning. Kepler figures to settle in on the strong side of a platoon in left field alongside Lourdes Gurriel, who will start there against lefties and shift to designated hitter when Kepler starts against righties, as was the case Friday.