HENDERSON, Nev.--The Las Vegas Raiders are days away from the NFL free agency season opening. On March 14 at noon EST, agents for free agents can begin their negotiations and are Tracy McGrady Jersey free to sign on March 16 at 1 p.m. ET.So today we take a look at the key who currently are still part of the Raiders and a slight blurb on each of them.Las Vegas Raiders UFA Blurbs1. K.J. Wright LB...