The only thing I could find is that he missed 2 games in 4 years because of an ankle injury.
I was curious about all the injuries too, this seems to be a recurring theme with Mayhew picks. Either this team is just incredibly unlucky or there's something deeper.
I think Slay is the only 2nd round pick so far that hasn't missed any significant time due to injury (or insanity).
NFL is much tougher than college for injuries. Especially the sun belt where Bentley played. Less wear and tear.