Seahawks CB Richard Sherman played with Seattle from 2011 through 2017
Richard Sherman was obviously one of the best cornerbacks of the 2010s, if not the best CB in the NFL. He led the league in interceptions during the decade. He was first-team All-Pro each season between 2012 and 2014 and he was named second-team All-Pro in two more seasons (one was with the San Francisco 49ers after Sherman had left Seattle). He made five Pro Bowls, but oddly not in 2012 when he was first-team All-Pro.
But the reason Sherman ranks higher than Dave Brown on this list is because of the uncommon leadership skills that Sherman brought to the team. While safety Kam Chancellor, who I don't have on this list but he just barely missed making it, was the thunder in the Legion of Boom, Sherman helped allow Chancellor to cheat inside the box against the run because Chancellor knew Sherman was shutting down the passing game on one side of the field.
Sherman didn't just play the pass extremely well, however. He was a big corner at 6'3" and 210 pounds and he liked to hit people and then talk about it. He played the run as well as any cornerback ever has. And one of the reasons the LOB was so intimidating was because the guys in the secondary left no quarter. There were no easy yards whether a team was throwing or running.
Sherman left the team in 2018 and even though he suffered through an injury-riddled 2017, Seattle likely shouldn't have left Sherman leave. They had no real replacement for him for years. He is the best corner Seattle has ever had and played on the best secondary maybe the NFL has ever seen.