Pettis did not receive a target in Sunday's loss to the Chiefs.
Pettis received his first NFL start last week in place of Marquise Goodwin, but he reverted to a depth role after the injured wideout returned to the lineup Sunday. The second-round pick flashed his big-play upside with 96 yards and a touchdown on just three receptions in place of Goodwin over the last two weeks, but it appears that only an injury to one of the 49ers' starting wideouts would open a path to significant snaps moving forward.