The Titans claimed cornerback Tramaine Brock off waivers from the Cardinals, a source tells NFL.com’s Mike Garafolo (on Twitter). The move gives the Titans veteran support for their ailing secondary and brings Brock to a team still in the playoff chase. 
Brock, long regarded as one of the league’s better slot corners, joined the Cardinals in April. The deal reunited the veteran with Vance Joseph, who set out to build an experienced CB unit for 2019.
The 31-year-old was having a solid individual year, even as the Cardinals struggled. He left Arizona after tallying 37 stops, two tackles for a loss, and three passes defensed across ten games this season.
Brock was dealing with an injury of his own – a hamstring ailment – but is now believed to be healthy. He’ll look to show his stuff for the Titans, who will pay him the remainder of his modest $1MM base salary.