The first draft for Reggie McKenzie in Oakland, he didn’t have a first round pick. That had been traded away the previous year as part of the deal to bring Carson Palmer to Oakland. McKenzie would have to wait until his second year to get a crack at the first round in what was considered a pretty weak class.
After a 4-12 season, the Raiders were sitting with the third overall pick and no second round pick; also part of the Carson Palmer trade. So, what they did was trade with Dolphins to move out of the number three spot to move down to 12 overall and pick up Miami’s pick in the second round.