At this stage Williams and Davis has "shown promise," but "need to improve on their coverage skills." Davis, in particular has "shown speed, but get's pushed off the route at times."
With the safeties, veterans Adrian Amos and Ryan Keiser have emerged as the likely starters. Amos started all 12 games last season with the bulk of his reps at cornerback, grabbing 41 tackles (32 solo) and an interception. Transitioning back to safety, "has been a good move." As one observer said, "He's better suited there and is more comfortable."
Keiser saw action in 11 games last season, starting five, including the final four PSU contests. He ended up with 32 tackles (26 solo), three interceptions and a sack. The coaches have reportedly liked his aggression and ability to make reads.
Behind them are Jesse Della Valle, who played in all 12 games and primarily handled punt return duties. At safety he grabbed 17 tackles (13 solo). Also in the mix is Malik Golden, who saw limited duties last season but is said to be looking much more comfortable in the defensive backfield, although "he needs to get his reactions down and trust his instincts."