Grandal left Saturday's game against the Mets with back spasms, Andy McCullough of the Los Angeles Times reports.
Grandal lasted seven innings in Saturday's win, going 1-for-4 with a double before he was replaced behind the plate by Austin Barnes. The team will likely let him rest for Sunday's series finale prior to Monday's well-timed travel day, but expect a more succinct evaluation by the team in due time.