The second wave of free agency is a tsunami for the Raiders, it turns out.



Former Dolphins All-Pro defensive tackle Ndamukong Suh is visiting the team facility on Wednesday. It will be his fourth visit with a team (Saints, Titans and Rams) after being released by the Dolphins last week. Suh is just what new defensive coordinator Paul Guenther wants in the middle of his 4-3 defense, pushing the pocket as Khalil Mack and Bruce Irvin rush from the outside.



On Tuesday, the Raiders hosted free agent receiver Eric Decker, but he left without a contract. It’s the second straight day a receiver visited, as Ryan Grant was in on Monday before leaving and signing with the Colts on Tuesday.



The Raiders were interested in Suh, 31, three years ago, but were blown out of the water when he said he would go the highest bidder, no questions asked.



And the Dolphins made him the highest-paid defensive player in NFL history.



But the 6-foot-4,...