Manager Terry Collins said Cespedes "felt something in his hip" which caused him to exit Saturday's contest, Mike Puma of the New York Post reports.
It appears a new ailment has popped up in what has already been an injury-filled season for the 31-year-old outfielder. Cespedes was forced to leave Saturday's win over the Rockies after making an awkward attempt at a diving catch and, although he was able to walk off under his own power, will be re-evaluated Sunday. Curtis Granderson would likely be in line for a starting role if the injury proves extensive.