Jakob Robinson Injury: Injures forearm Saturday

Coach Kyle Shanahan said Robinson is believed to have suffered a broken forearm in Saturday's preseason game against the Chargers, Matt Maiocco of NBC Sports Bay Area reports.

The undrafted rookie out of BYU played 105 snaps across defense and special teams this preseason and was competing for one of the final roster spots in San Francisco's secondary. He could now be ticketed for injured reserve.