IRVING, Texas – The Dallas Cowboys officially will be without two defensive starters -- linemen Kenyon Coleman and Jay Ratliff -- but they very easily could be without a third in safety Gerald Sensabaugh, who is listed as doubtful for Sunday's game against the Tampa Bay Buccaneers.

Sensabaugh has not practiced all week because of a right calf strain suffered in the fourth quarter of last week’s loss at Seattle. Tight end Jason Witten was listed as doubtful for the season opener with a lacerated spleen but managed to play.

If he doesn't play, it will only be the second game Sensabaugh will miss since joining the Cowboys. Coleman (knee) will be missing only his fourth game since 2006.

Ratliff will miss his third straight game with a high ankle sprain suffered in the preseason.

Linebacker Alex Albright (neck) has also been ruled out and his absence could lead to a roster change on Saturday. Center Phil Costa (back) and safety Matt Johnson (hamstring) are also out.

Defensive end Marcus Spears (knee ) is questionable but was able to practice the last two days.

Linebacker Sean Lee took part in his third straight limited practice of the week because of a sore hip but he is listed as probable.

“I’m ready to go,” Lee said in the locker room after Friday’s practice.

Witten (spleen), linebacker DeMarcus Ware (hamstring), linebacker Kyle Wilber (thumb), wide receiver Miles Austin (hamstring), safety Barry Church (quadriceps), wide receiver Andre Holmes (knee) and cornerback Mike Jenkins (shoulder) are probable.