Kameron Kelly found himself on the unemployment line last spring when the Alliance of American Football abruptly went out of business in the middle of the season. Now the safety could be standing across the line of scrimmage from Brady and the defending Super Bowl champions with starter Sean Davis iffy with an ankle injury. Kelly will be part of a new-look secondary that includes cornerback Steven Nelson, whom the Steelers signed to a three-year contract in free agency. Pittsburgh is looking to create more takeaways after managing just 15 in 2018. That could be hard against Brady, who has never thrown a pick at home against the Steelers.