2. TE Michael Mayer
Maybe this isn't totally fair to Mayer, who the Raiders drafted in the 2nd round of last year's NFL Draft. Tight ends notoriously take a few years to develop, but still – it was a rough rookie season for Mayer. 27 receptions, 304 yards, and two touchdowns is an underwhelming statline, and the analytics weren't much kinder – he ended the season ranked by PFF as the 40th best tight end in football (out of 72). It's hard to say his will career in Vegas will be a total bust at this point, but his rookie year certainly was.