The Texans' secondary got better when they shifted personnel after terminating nickel corner Aaron Colvin's $34 million contract.
By inserting second-round pick Lonnie Johnson as a starting outside corner, the defense got bigger and faster.
And the tackling and ability to cover man to man has been upgraded by shifting veteran corner Bradley Roby from outside corner to nickel. A former Denver Broncos first-round draft pick, Roby is playing under a one-year, $10 million contract.
"Bradley has played well for us," Texans coach Bill O'Brien said. "Bradley is a good teammate. He does what we ask him to do.