Much has been made known about how the Las Vegas Raiders approached acquiring wide receiver talent.  There are no household-wide receiver names on the roster, and there should be some consternation about how that room looks as we approach the regular season. Is it a good enough supporting cast on the perimeter for new quarterback Fernando Mendoza ? Fernando Mendoza | Darrell Craig Harris, On SI The Raiders do not have a true No. 1 receiver, lacking an X-receiver Mendoza can trust and throw it up to when the team needs to make a play. Functionally, that is tight end Brock Bowers , but Las Vegas should try to find a difference-maker on the perimeter.  Let’s break down Las Vegas’ wide receiver room and see if it’s a group that can help Mendoza have a successful rookie season and prove to feature building blocks for the future.…