Hopkins didn't participate in Sunday's scrimmage due to an undisclosed injury, Jeff Miller of the Los Angeles Times reports.
Although it's unclear what health concern Hopkins is dealing with, he's battling a physical issue that has prevented him from kicking over the past week, Daniel Popper of The Athletic reports. He's competing with Cameron Dicker for the Chargers' kicking job, and a timetable for Hopkins' return remains to be seen.