NASHVILLE, Tenn. – The Titans have added a third quarterback to the roster, and he's a familiar face – quarterback Austin Davis.
Meanwhile, a key member of the defense – defensive lineman Jurrell Casey – has been placed on Injured Reserve.
Those two transactions are among the moves made by the Titans on Monday, as the team begins preparations for Sunday's game against the Colts at Nissan Stadium.
The Titans also promoted former University of Tennessee linebacker LaTroy Lewis to the 53-man roster, and placed tight end Cole Wick on Injured Reserve.
Casey's loss is a big one. The four-time Pro Bowler suffered a knee injury in Saturday's win over the Redskins. In 15 starts this season, Casey produced 72 tackles, seven sacks, 50 quarterback pressures, seven tackles for a loss, two forced fumbles and one fumble recovery.
Wick, who joins Casey on IR, was signed to the roster earlier this month when he was signed off San Francisco's practice squad. But he was injured in practice after joining the team, and he didn't play in a game.
The Titans added Davis for the second time this season as the team waits on the status of quarterback Marcus Mariota, who suffered a stinger in Saturday's game vs. the Redskins. Back-up quarterback Blaine Gabbert finished the contest, and guided the Titans to a comeback win.
Mariota's status for Sunday likely won't be known until later in the week.
A seven-year veteran, Davis has spent time with the Rams, Dolphins, Browns, Broncos and Seahawks during his NFL career, and he joined the Titans for a short stretch in September. He's played in 16 career games, and has completed 236-of-378 passes for 2,548 yards and 13 touchdowns, and 12 interceptions.
Davis (6-2, 221) played collegiately at Southern Miss, and he spent the 2017 season as quarterback Russell Wilson's back-up in Seattle. He was initially signed after Gabbert suffered a concussion earlier in the season.
Lewis was signed to the practice squad back in October. He signed with the Raiders as an undrafted college free agent in 2017. He was waived following training camp and signed with the Texans, where he played two games and totaled three tackles.
The Titans have also made a few additions to the practice squad. Former University of Tennessee defensive lineman Kendal Vickers has been added, along with receiver Kalif Raymond.
Raymond (5-9, 160) re-joins the Titans practice squad after a week-long stint with the team in September. He entered the NFL with the Broncos in 2016, as an undrafted free agent from Holy Cross. He has spent time on the practice squads and the 53-man rosters of the Broncos, New York Jets and New York Giants, totaling one reception for 12 yards, 29 punt returns for 210 yards (7.2 avg.) and 20 kickoff returns for 408 yards (20.4 avg.).
Vickers (6-3, 295) was signed by the Pittsburgh Steelers as an undrafted college free agent, following the 2018 NFL Draft; and was waived during final cuts before the regular season. Vickers played 43 games at the University of Tennessee, where he totaled 108 tackles and 4.5 sacks during his college career.
The Tennessee Titans take on the Washington Redskins in Week 16 of the 2018 season on Saturday, Dec. 22, 2018 at Nissan Stadium. (Photos: Donn Jones, AP)
Tennessee Titans running back Derrick Henry (22) gets past Washington Redskins strong safety Ha Ha Clinton-Dix (20) as Henry scores a touchdown on a 1-yard run in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans quarterback Marcus Mariota passes against the Washington Redskins in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans quarterback Marcus Mariota (8) scrambles against the Washington Redskins in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Washington Redskins strong safety Ha Ha Clinton-Dix (20) hangs onto Tennessee Titans wide receiver Corey Davis (84) in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans running back Derrick Henry (22) runs the ball against the Washington Redskins in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans center Ben Jones (60) prepares to snap the ball against the Washington Redskins in the second half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans running back Derrick Henry (22) gets past Washington Redskins strong safety Ha Ha Clinton-Dix (20) as Henry scores a touchdown on a 1-yard run in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans running back Derrick Henry (22) gives the ball to field judge Don Willard (58) after Henry scored a touchdown against the Washington Redskins in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Washington Redskins running back Adrian Peterson (26) carries the ball against the Tennessee Titans in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans running back Derrick Henry, center, celebrates with MyCole Pruitt (85) and Luke Stocker (88) after Henry scored a touchdown against the Washington Redskins in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans head coach Mike Vrabel watches from the sideline in the first half of an NFL football game against the Washington Redskins Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans outside linebacker Kamalei Correa celebrates after a play against the Washington Redskins in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans running back Dion Lewis plays against the Washington Redskins in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans running back Dion Lewis (33) gets past Washington Redskins outside linebacker Preston Smith (94) in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans running back Derrick Henry (22) is congratulated by Dion Lewis (33) after Henry scored a touchdown against the Washington Redskins in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans quarterback Marcus Mariota (8) plays against the Washington Redskins in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans quarterback Marcus Mariota (8) is attended to after being injured in the first half of an NFL football game against the Washington Redskins Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans quarterback Blaine Gabbert (7) calls a play against the Washington Redskins in the second half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans quarterback Blaine Gabbert passes against the Washington Redskins in the second half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans quarterback Marcus Mariota is attended to after being injured in the first half of an NFL football game against the Washington Redskins Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans running back Derrick Henry (22) is brought down by Washington Redskins inside linebacker Mason Foster (54) in the first half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans tight end MyCole Pruitt (85) celebrates after scoring a touchdown on a 2-yard pass reception against the Washington Redskins in the second half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans quarterback Blaine Gabbert (7) calls a play in the second half of an NFL football game against the Washington Redskins Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans quarterback Blaine Gabbert (7) stretches before coming into the game to replace injured quarterback Marcus Mariota in the first half of an NFL football game against the Washington Redskins Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans quarterback Blaine Gabbert (7) is pressured by Washington Redskins outside linebacker Ryan Kerrigan (91) in the second half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans free safety Kevin Byard plays against the Washington Redskins in the second half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans tight end MyCole Pruitt (85) scores a touchdown on a 2-yard pass reception against the Washington Redskins in the second half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans head coach Mike Vrabel argues a call in the second half of an NFL football game against the Washington Redskins Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans quarterback Blaine Gabbert (7) passes against the Washington Redskins in the second half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans tight end MyCole Pruitt (85) celebrates with tight end Anthony Firkser after Pruitt scored a touchdown on a 2-yard pass reception against the Washington Redskins in the second half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans free safety Kevin Byard (31) celebrates after intercepting a pass against the Washington Redskins late in the fourth quarter of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans tight end MyCole Pruitt (85) scores a touchdown on a 2-yard pass reception against the Washington Redskins in the second half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
El tight end de los Titans de Tennessee, MyCole Pruitt (85), anota ante los Redskins de Washington en el encuentro del s‡bado 22 de diciembre de 2018 (AP Foto/James Kenney)
Tennessee Titans head coach Mike Vrabel, left, shakes hands with Washington Redskins head coach Jay Gruden after an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. The Titans won 25-16.(AP Photo/James Kenney)
Tennessee Titans free safety Kevin Byard (31) celebrates with teammates after Byard intercepted a pass against the Washington Redskins late in the fourth quarter of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. The Titans won 25-16. (AP Photo/James Kenney)
Tennessee Titans quarterback Blaine Gabbert (7) meets with Washington Redskins quarterback Mark Sanchez (6) after an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. The Titans won 25-16.(AP Photo/Mark Zaleski)
Tennessee Titans free safety Kevin Byard (31) celebrates after intercepting a pass against the Washington Redskins late in the fourth quarter of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/James Kenney)
Tennessee Titans tight end MyCole Pruitt leaves the field after the Titans beat the Washington Redskins in an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. The Titans won 25-16. (AP Photo/Mark Zaleski)
Tennessee Titans punter Brett Kern (6) gets a punt away against the Washington Redskins in the second half of an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. (AP Photo/Mark Zaleski)
Tennessee Titans free safety Kevin Byard (31) celebrates with tight ends coach Arthur Smith after the Titans beat the Washington Redskins in an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. The Titans won 25-16.(AP Photo/James Kenney)
Tennessee Titans tight end MyCole Pruitt (85) runs onto the field after the Titans beat the Washington Redskins 25-16 in an NFL football game Saturday, Dec. 22, 2018, in Nashville, Tenn. Pruitt scored the go-ahead touchdown in the fourth quarter. (AP Photo/James Kenney)
Tennessee Titans running back Derrick Henry (22) leaves the field after an NFL football game against the Washington Redskins Saturday, Dec. 22, 2018, in Nashville, Tenn. The Titans won 25-16.(AP Photo/James Kenney)
Tennessee Titans head coach Mike Vrabel answers questions after an NFL football game against the Washington Redskins Saturday, Dec. 22, 2018, in Nashville, Tenn. The Titans won 25-16. (AP Photo/Mark Zaleski)
Tennessee Titans head coach Mike Vrabel answers questions after an NFL football game against the Washington Redskins Saturday, Dec. 22, 2018, in Nashville, Tenn. The Titans won 25-16. (AP Photo/Mark Zaleski)
