Junior Seau is healthy and thinks he can still play. He also knew it was time to retire from a 16-year NFL career. "It's pretty easy. When a team doesn't want you or need you, retire, buddy," the 12-time Pro Bowl linebacker said to laughter from a crowd of about 300 family, friends, players and team executives Monday at the San Diego Chargers' headquarters. The 12-time Pro Bowl linebacker ended his career as only he could, with a news conference that was part revival meeting and part standup comedy.