Jared Gaither returned to practice yesterday after missing the last month with a foot injury.
Today, the Ravens' offensive tackle was nowhere to be seen.
Gaither received a cortisone shot to help his injured right foot heal, and also received some orthodics in his shoes. Harbaugh said both helped Gaither yesterday.
"He practiced yesterday, did a nice job," head coach John Harbaugh said after practice today. "Told me the foot felt a lot better."
As for his absence today?
"I have not seen him today," Harbaugh said. "It was not an injury. I have not talked with him today. I don't know what his reason for not being here is."