Humphrey (undisclosed) left the Ravens' training camp practice early Wednesday and did not return, Quentin Corpuel of the team's official site reports.
Per Jeff Zrebiec of The Athletic, Humphrey left the field under his own power, and it wasn't clear exactly what happened. Until he's ready to return to practice, fellow veteran Chidobe Awuzie could see some reps in the secondary with the first-team defense.