The Las Vegas Raiders still have plenty of work to do in the NFL draft . General manager John Spytek has added two offensive players and two defensive players over the first two days of the draft and will now be tasked with trying to identify late-round gems with the team’s final six picks on Saturday when the event resumes at 9 a.m. Spytek plans to meet with his staff, including assistant general manager Brian Stark, late into the evening to reset the draft board and prepare for an early start. The Raiders will have the second pick of the fourth round, the 102nd overall selection, shortly after the clock restarts. “We’ll be off and running with the second pick,” Spytek said. “We’re just going to keep trying to identify the really good football players that want to be Raiders and lay it on the line for their teammates.…