With the Cardinals banged up along the defensive line, the team signed a pair of defensive tackles Wednesday to provide depth heading into Sunday's third preseason game in Dallas against the Cowboys.

Tani Tupou, who played in one game for Atlanta last season after spending most of the year on the Falcons' practice squad, and Nigel Williams, who was with the Bills during the 2017 preseason, each will be available with the status of starting defensive tackles Corey Peters (knee) and Robert Nkemdiche (foot) uncertain.

Coach Steve Wilks also said defensive tackle Olsen Pierre is injured, although he didn't disclose the nature of the injury. Wilks added he expected all three to be ready for the regular-season opener Sept. 9. Those are the top three defensive tackles on the team. Rodney Gunter is the other second-unit defensive tackle.

To make room on the roster, the Cardinals released wide receiver Austin Wolf and tight end Chris Bazile.

All three injuries are considered minor. Peters, in fact, returned to play Friday night in New Orleans after initially getting hurt.

Peters said "I expect to be ready" when asked Wednesday about the opener.

Tupou was an undrafted free agent in 2016, originally signing with Seattle, for whom he played one game that season. Williams was a rookie in 2017.