Driskel was atrocious Thursday, completing just one of four pass attempts for three yards while throwing two interceptions in the 31-21 preseason win over San Diego.
There were rumblings entering Thursday's game that Driskel could leapfrog Colin Kaepernick on the depth chart with a strong preseason finale, but he failed to deliver and now his roster spot is in jeopardy, according to the Sacramento Bee. There is always a chance that the 2016 sixth-round pick ends up on the 49ers' practice squad -- especially because his skill set matches that of head coach Chip Kelly's gameplan -- but his chance of making the 53-man roster appears to be soiled.