De La Rosa (elbow) was officially activated from the DL ahead of Friday's start against the Giants.
The 27-year-old's long road back from injury will end Friday, as he will return to face the Giants in his first start since May 25. While the Giants rank dead last in the NL in runs scored this month with 18, they are a relatively strong favorite in the road matchup with ace Madison Bumgarner on the mound.