As expected, with the initial rush of NFL free-agent signings abated, Oakland signed a trio of free agents on Wednesday while addressing glaring holes on defense -- defensive end Jason Hunter, linebacker Kaluka Maiava and defensive tackle Pat Sims. "We're excited to add three veterans through free agency," Raiders general manager Reggie McKenzie said in a statement, "helping to create depth and competition on defense. We'll continue to add free agents as the opportunity surfaces." The Raiders have also been linked to Chicago linebacker Nick Roach, New York Jets guard Matt Slauson and former No. 3 overall draft pick/quarterback Vince Young. The 6-foot-4, 275-pound Hunter, 29, has experience with both McKenzie and coach Dennis Allen as Hunter spent the first three years of his NFL career with Green Bay before a one-year trip to Detroit. He spent the past three years in Denver, though a triceps injury had him on injured reserve all season last year. Hunter, who was an undrafted rookie from Appalachian State, has 11 sacks, six passes defensed and three forced fumbles in 88 games, 23 starts.