He played college football for the Alabama Crimson Tide and was selected by the Washington Redskins in the second round of the 2017 NFL draft.

[7] Anderson received an invitation to the Senior Bowl, but was unable to play in the game after he dislocated his thumb during the first day of practice.

[10] He attended the NFL Combine and decided to not perform the short shuttle, broad jump, bench press, and three-cone drill.

[15] Along with being a backup outside linebacker behind starters Ryan Kerrigan and Preston Smith, Anderson took offensive snaps at fullback during his rookie season.

[16] In Week 13 of the 2019 season, Anderson got his first career start against the Carolina Panthers as a replacement for Ryan Kerrigan, who suffered a concussion the previous game.

[21][22] On August 28, 2021, Anderson was suspended for the first six games of the 2021 season due to violating the NFL's policy on performance enhancing substances.