Backup quarterback Mason Rudolph will be ready to go Sunday for the Pittsburgh Steelers, but coach Mike Tomlin is leaving the door open for Ben Roethlisberger to start against the Los Angeles Chargers. Roethlisberger is on the reserve/COVID-19 list after testing positive on Saturday, despite being fully vaccinated. He’ll need to have two negative tests and be asymptomatic to return to the active roster to play against the Chargers. “We’re going to build our plan around getting Mason ready to play,” Tomlin said. “We’re going to highlight his talents and skills relative to the opponents that we’re intending to play. We’re going to build that plan, work that plan. We’ve got a young offensive unit, and we’ll let that lead us throughout the week. “If we get to a point in the week where Ben has an opportunity to get to a moving train, that’s exactly what he’ll do. He’ll …