FILE - In this Jan. 10, 2010, file photo, New England Patriots linebacker Junior Seau warms up on the field before an NFL wild-card playoff football game in Foxborough, Mass. From perennial champion Charles Haley to the remarkably durable Mick Tingelhoff to the Bus, Jerome Bettis, the 2015 class of the Pro Football Hall of Fame is a versatile group. Missing for the Saturday, Aug. 8, 2015, inductions, however, will be linebacking great Seau, a suicide three years ago. (AP Photo/Charles Krupa, File)