[1] Adderley played college football for the Michigan State Spartans and was an All-Big Ten offensive star as a halfback.

[2] Adderley graduated from Northeast High School in 1957, where he starred in football, basketball, and baseball,[3] and won All-City Honors in all three.

[4] Adderley attended Michigan State University (MSU) in East Lansing, his first time coming out of Philadelphia.

[8] He is also one of the founding members of the Sigma Chapter of Omega Psi Phi fraternity at Michigan State University along with Ernie Green of the "Little Rock Nine", established on campus in 1960 or 1961.

[7] He began his professional career as a halfback on offense, but was later switched to defense because the Packers already had eventual Hall of Fame runners in Paul Hornung and Jim Taylor.

[6] He held the Green Bay records for interceptions returned for touchdowns in a career (seven, tied by Darren Sharper and then broken by Charles Woodson[17]), and holds the record for interceptions returned for touchdowns in one season (three, in 1965,[17] tied by Nick Collins and Woodson).

[1] Adderley had a strained relationship with Phil Bengtson by the end of the latter's second and penultimate year as Packers head coach.

[20] After a holdout and two weeks before the start of the regular season, he was sent from the Packers to the Dallas Cowboys for Malcolm Walker and Clarence Williams on September 1, 1970.

[21] He became a vital cog in its "Doomsday Defense,"[22] assisting the Cowboys to a Super Bowl appearance in V and a win in VI.

[19] Benched in favor of a young Charlie Waters during the middle of the 1972 season,[23] Adderley was traded to the Los Angeles Rams in the summer of 1973.

[1] Along with the Patriots' Tom Brady, who has won 7 world championships,[24] and two Packer teammates, offensive linemen Fuzzy Thurston (Colts) and Forrest Gregg (Cowboys), Adderley is one of only four players in pro football history to play on at least six world championship teams.

[25] However, in a revised edition of Instant Replay, a memoir by Packer teammate Jerry Kramer, Adderley is quoted as saying, "I'm the only man with a Dallas Cowboys Super Bowl ring who doesn't wear it.