[2] Midway through his senior season in 2010, Richardson transferred to Nashville's Pearl-Cohn High School for academic reasons.

[4] He won the discus throw event at the 2010 TSSAA D-II Middle Sectional Championships, recording a top-throw of 49.26 meters.

[1] He was widely praised for his performance against All-American defensive end Jadeveon Clowney in Tennessee's 38–35 loss to South Carolina.

[2] At the start of his junior campaign in 2013, Richardson was named to the Coaches' Preseason All-SEC team, and was placed on the Outland Trophy watch list.

[13] His combine performance was panned by critics who deemed him to be too slow and many speculated past knee injury remained an ongoing issue.

[14] Although injury rumors persisted, Richardson only gave up two sacks during his junior season, started all 12 games at left tackle in the SEC, and was a year removed from his knee surgery.

NFL analyst Daniel Jeremiah stated Richardson's junior year film carried the grade of a fifth round prospect and he had issues with run blocking.

He opted to stand on his combine numbers and only performed positional drills for scouts and representatives from all 32 NFL Teams, that included Seattle Seahawks' offensive line coach Tom Cable.

Throughout training camp, Richardson competed for a roster spot against Phil Loadholt, Mike Remmers, Kevin Murphy, Matt Hall, and Austin Wentworth.