Radway has the size (6'4) speed 4.34 - 4.42. Two things jump out at me as he tries to separate himself from the pack of WRs.
He is 26 years old. Not exactly young for a guy trying to make his first NFL Roster.
Second, the drop last night in more indicative of what he has shown throughout training camp. IMO, there is a reason that a 6'4 200+ lb WR who run sub 4.4 is still trying to make his first NLF roster.
He doesn't contribute on any of the coverage units on Special Teams, and has been given only limited reps on Kickoff Return.
If he gets back in time from his hamstring injury, and shows anything close to what he showed in the first 4 days of camp, Andrew Helmick is the one guy capable of separating himself from the pack of "JAGs" (just a guy) that now is the list competing for that 6th spot.