"Ben Roethlisberger sustained a hit today in practice," Tomlin said. "He is being evaluated by team doctors as part of the concussion protocol."
Roethlisberger went down during a 7 shots segment of practice, according to multiple reporters on the scene.
Roethlisberger was briefly on the ground before eventually getting up. He then spent time talking to a team trainer and general manager Kevin Colbert before leaving the field under his own power, Ed Bouchette of the Pittsburgh Post-Gazette reported.
With the starting quarterback now being evaluated in the concussion protocol, Roethlisberger will have extra time to recover before the regular season, which kicks off in less than a month.