The Bills have signed Kyle Allen, creating the possibility they might start two different quarterbacks with the same last name (first, he needs to win the backup job, and then there would need to be a Josh Allen injury during the season). What are the only other two teams since the merger who have had two different quarterbacks with the same last name start in the same season? They come from the 2002 and 2010 seasons, and the last names are common.
Buccaneers and 49ers. In the 2002 season, Brad Johnson started 13 games for the Tampa Bay team that went on to win the Super Bowl; Rob Johnson started two games for that team. In 2010, Alex Smith started 10 games for San Francisco, while Troy Smith started the other six.