SPARTANBURG, S.C. — The Carolina Panthers have returned to training camp without top receiver Steve Smith, who sustained a concussion in the preseason opener.

Smith did not practice this morning. Coach John Fox said only that he's day-to-day.

Smith was shaken up after making a leaping 19-yard catch in the first quarter of Saturday's 23-20 overtime win against Indianapolis. He continued to play, but quarterback Matt Moore said he knew something was wrong with Smith.

The receiver was suspended for the first two regular-season games for breaking teammate Ken Lucas' nose in a fight during practice this month. Lucas did conditioning drills on an adjacent field today, but is still not cleared to practice after he underwent a procedure last week to set his nose.