The Carolina Panthers have another injured quarterback.
Panthers coach John Fox said Jimmy Clausen sustained a concussion during Sunday's 31-16 loss at Tampa Bay, and indicated the injury might have occurred when Bucs cornerback Aqib Talib dove headfirst into the pile on Clausen's quarterback sneak in the final seconds.
"It's hard to say. Could have been any number of plays, but there's a chance it could have happened on the last play," Fox said Monday.
Fox, who did not mention Clausen among the Panthers' injured players after the game, said the symptoms developed later.
"A bunch of people talked to him even after the game," Fox said. "It was something that came on as the post-game wore on."
Clausen, a rookie from Notre Dame, is day-to-day. Fox said he would update his condition Wednesday.
After Talib went into the pile on fourth-and-goal from the 1, Panthers receiver Steve Smith hit Talib and was flagged for unnecessary roughness. Smith said he was protecting Clausen, and would do it again "100 out of 100 times."
Smith said Bucs safety Sean Jones also led with his head on Clausen's sneak. Neither Talib nor Jones was penalized.
Fox said the Panthers would send tape of the play to the league office, but chose his words carefully.
"I don't see really a way I can comment on that, other than it shows a lot about Steve to take care of his teammate."
Clausen's concussion comes a week after starting quarterback Matt Moore was placed on injured reserve with a torn labrum in his throwing shoulder. If Clausen can't play Sunday against Baltimore, backup Tony Pike, another rookie, likely would get the start.
Behind Pike on the depth chart are rookie Armanti Edwards, who was drafted as a receive, and Brian St. Pierre, a 30-year-old journeyman who was signed to Carolina's practice squad last week.