"He will be out for several weeks," Tomlin said. "I think we need to let a day or two go by before we look at the totality of a possible return."
The injury situation in Pittsburgh's secondary is rough, as well.
Ike Taylor will miss his second consecutive game due to a broken right ankle, and Tomlin revealed Tuesday that Keenan Lewis and Cortez Allen have hip flexor ailments. Although both will be limited in practice, Tomlin indicated he was more optimistic about Lewis' potential availability to play Sunday.
Lewis started in Taylor's place against San Diego, with Curtis Brown filling in as the slot. The result was 12 third-down conversions from San Diego — the majority targeted at Allen or Brown.
Brown was benched in the second half in favor of the undrafted Josh Victorian. The first-year pro was on the practice squad just last week — but he could be in line for a significant role in Dallas if either Allen or Lewis can't play. Victorian was beat for a touchdown by Danario Alexander in the fourth quarter Sunday.
Another cornerback who had yet to see many reps on defense but who might be pressed into action is DeMarcus Van Dyke. Van Dyke was cut by Oakland at the end of training camp a year after being drafted in the third round by the Raiders.
"Obviously, we are running short at cornerback," Tomlin said. "Those guys that had the opportunity to step up and log a bunch of snaps over the last week and a half, it looks like that is going to continue."
Van Dyke started four of the 14 games he played for Oakland as a rookie last season. He was active for Pittsburgh's first six games this season. After being flagged five times for fouls on special teams over a three-game span, though, he was benched. He was a Sunday inactive five times in a six-game span before playing vs. the Chargers.
"We will continue to work with those guys and build a plan around what they are capable of executing and executing at a high level," Tomlin said. "More than anything, it's not about what we call; it's about what those guys are capable of executing."