Taking him in the first round (13th overall) out of Texas in the 1953 NFL Draft, the Detroit Lions added an immediate physical presence to their interior line in Harley Sewell. Known for his exceptional speed and leverage as a pulling guard, Sewell stepped into the starting left guard spot as a rookie and instantly solidified Motown's offensive line.

Sewell's mobility made him the ideal lead blocker on sweeps and traps, clearing paths for iconic backs like Doak Walker and Bobby Layne. He earned immediate postseason success, helping power Detroit to an NFL Championship as a rookie in 1953 and capturing a second title ring in 1957. Recognized as one of the premier interior guards of his era, Sewell earned four Pro Bowl selections (1957, 1958, 1959, 1962) and a Second-Team AP All-Pro nod in 1957.

Beyond his offensive line mastery, Sewell was a relentless hustler who also starred on special teams, regularly leading the coverage units in tackles. After ten dependable seasons anchoring the Lions' interior, he concluded his career with a brief stint with the Los Angeles Rams in 1963. Detroit later honored his enduring impact with a spot on the Lions’ 75th Anniversary Team.

Sewell had 111 starts over his 120 games for the team.