Richie Incognito to retire from Buffalo Bills, he claims on Twitter
Las Vegas Raiders releasing one of NFL's top centers
Richie Incognito Stats, News and Video - G
Buffalo Bills officially place Richie Incognito on reserve/retired
Ex-Bills OL Incognito taken into custody
Richie Incognito called Mike Zimmer a 'f------ liar' for denying
Former Dolphins Richie Incognito, Jason McCourty announce retirement
NFL Notebook: Lions' Calvin Johnson retires - West Central Tribune
Richie Incognito Stats, News and Video - G
Ex-Dolphin Richie Incognito announces NFL retirement
Raiders' Richie Incognito returns to practice after suspension
Raiders RG Richie Incognito Announces Retirement From The NFL
Four-time Pro Bowl guard Richie Incognito announces retirement