Robinson is currently the Director of Player Personnel for the Tampa Bay Buccaneers.
The Titans also announced Monday that Steve Underwood will oversee the searches as president and chief executive office.
Tennessee lost to Indianapolis 30-24 in their final game of the NFL season.
Mariota had tested his sprained right knee both Monday and Tuesday.
Mariota was hurt when sacked for the third time at 10:32 of the second quarter in a 33-16 loss at New England.
Brady completed 23 of 35 passes for 267 yards.
Thanks to a strong defense, the New York Jets flew by the Tennessee Titans 30-8 Sunday, December 13.
Mariota touchdown 87 yard run is the NFL’s longest run this season
The Titans lost to the Raiders after a last minute touchdown by Oakland with 1:21 left in the game.