ALAMEDA, Calif. (AP) The Oakland Raiders added another top free agent to their offseason haul, agreeing to a four-year, $40 million deal with former Kansas City cornerback Sean Smith.

Smith's agent, David Canter, said Thursday that Smith had agreed to join the big-spending Raiders. Oakland previously reached deals with offensive Kelechi Osemele for up to $60 million for five years and pass rusher Bruce Irvin for up to a reported $39 million for four seasons.

But finding a cornerback was the top need in free agency, and Oakland won a heated competition for Smith. Smith has allowed opponents to catch fewer than 60 percent of passes for all seven of his NFL seasons and gives the Raiders the starter they needed alongside David Amerson.

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