Jennings (heel) isn't listed on the 49ers' injury report Wednesday.
Jennings played well in the 49ers' exhibition opener, but an injury suffered in preseason Week 2 could have derailed the receiver's chances of making the 49ers. The 24-year-old ended up a member of the regular-season roster and no longer is on the injury report, so he could see minimal snaps in Sunday's season opener, if active.