fromwww.mercurynews.com
1 week ago49ers' transactions indicate Purdy won't be the backup to Jones against Arizona
The 49ers also placed offensive lineman Spencer Burford on injured reserve, meaning he would miss at least the next four games with a knee injury. Coach Kyle Shanahan said Friday that if 49ers wanted Purdy to be suited up as the emergency No. 3 quarterback, then Martinez, by league rules would have to be promoted to the 53-man roster as the backup rather than be called up from the practice squad.
National Football League