 He finished the 2015 season with a total of 32 combined tackles (29 solo) and five pass deflections in three starts and 16 games.The San Francisco 49ers opted to fire Tomsula after they finished with a 5–11 record in 2015.Johnson competed with Tramaine Brock, Jimmie Ward, Chris Davis, Kenneth Acker, Keith Reaser, and Rashard Robinson through training camp for the starting cornerback position.