Coach Mike Tomlin said Sunday that Alualu (ankle) will miss "significant time," Brooke Pryor of ESPN.com reports.
Alualu had to be helped off the field in Sunday's Week 2 loss to the Raiders, and he was diagnosed with a fractured ankle. He'll undergo further tests Monday to determine the extent of the issue, but Isaiah Buggs will likely take on a starting role while the 34-year-old is sidelined.