Lachey instantly became a member of the famed “Hogs” O-Line, playing at Right Tackle for the remainder of the 1988 Season, and moving to the left side after. From 1989 to 1991, Lachey made a claim as the greatest Left Tackle in the NFL, named a First Team All-Pro in all three seasons, and a Pro Bowl in two of them. 1991 was by far his best season in pro football, as his 19 in Approximate Value placed him fourth in the NFL, and his Redskins won the Super Bowl.
An injured knee kept Lachey out of the game in 1992, and he was out of the game in 1995. He started all 83 of his Games as a Redskin.