JACKSONVILLE, Fla. – Titans quarterback Marcus Mariota replaced an injured Blaine Gabbert in the first quarter of Sunday's game vs the Jaguars at TIAA Field.
Gabbert started the contest for the second week in a row in place of Mariota, sidelined since Week One and limited in practices because of an elbow injury.
But Gabbert was knocked out of a game following a hit, and he headed to the locker room with the team's medical staff, where he was being evaluated for a concussion.
Mariota stepped in and finished off a drive that ended with a field goal by Ryan Succop that gave the Titans an early 3-0 lead.
Mariota was active but didn't play last Sunday vs. the Texans. Gabbert got the start, and guided the Titans to a 20-17 win at Nissan Stadium. He was awarded a game ball for his performance.
Mariota didn't finish the season opener against the Dolphins after suffering the elbow injury.
Mariota was injured in the season opener after taking a hit by Dolphins defensive lineman William Hayes. Mariota had just handed the ball off to running back Derrick Henry, and he didn't have the ball when he was hit.
Mariota acknowledged earlier in the week he still felt some numbness and tingling in his fingers as a result of the injury. Mariota said the whole hand is affected by the injury "but the numbness and the (tingling) is a couple of fingers. The weakness is the whole hand, and that is what I am working on."
The Tennessee Titans prepare to take on the Jacksonville Jaguars in Week 3 of the 2018 season on Sunday, Sept. 23, 2018 at TIAA Bank Field. (Photos: Donn Jones, AP)
Tennessee Titans controlling owner Amy Adams Strunk watches her team warm up before the start of an NFL football game between the Jacksonville Jaguars and the Tennessee Titans, Sunday, Sept. 23, 2018, in Jacksonville, Fla. (AP Photo/Stephen B. Morton)
Jacksonville Jaguars quarterbacks Cody Kessler (6) and Blake Bortles (5) talk during warm ups before an NFL football game against the Tennessee Titans, Sunday, Sept. 23, 2018, in Jacksonville, Fla. (AP Photo/John Raoux)
Tennessee Titans quarterback Marcus Mariota (8) and quarterback Blaine Gabbert (7) throw during warmups before an NFL football game against the Jacksonville Jaguars Sunday, Sept. 23, 2018, in Jacksonville, Fla. (AP Photo/Phelan M. Ebenhack)
Tennessee Titans controlling owner Amy Adams Strunk watches her team warm up before the start of an NFL football game between the Jacksonville Jaguars and the Tennessee Titans, Sunday, Sept. 23, 2018, in Jacksonville, Fla. (AP Photo/Stephen B. Morton)
Tennessee Titans quarterback Marcus Mariota (8) and quarterback Blaine Gabbert (7) throw during warmups before an NFL football game against the Jacksonville Jaguars Sunday, Sept. 23, 2018, in Jacksonville, Fla. (AP Photo/Phelan M. Ebenhack)
Tennessee Titans quarterback Marcus Mariota (8) warms up before the start of an NFL football game against the Jacksonville Jaguars, Sunday, Sept. 23, 2018, in Jacksonville, Fla. (AP Photo/Stephen B. Morton)
Jacksonville Jaguars head coach Doug Marrone, left, and Tennessee Titans head coach Mike Vrabel share a laugh on the field before an NFL football game Sunday, Sept. 23, 2018, in Jacksonville, Fla. (AP Photo/Phelan M. Ebenhack)
Tennessee Titans controlling owner Amy Adams Strunk adjusts a bandage on her right arm while on the sidelines before the start of an NFL football game between the Jacksonville Jaguars and the Tennessee Titans, Sunday, Sept. 23, 2018, in Jacksonville, Fla. (AP Photo/Stephen B. Morton)
Tennessee Titans quarterback Marcus Mariota (8) warms up before the start of an NFL football game against the Jacksonville Jaguars, Sunday, Sept. 23, 2018, in Jacksonville, Fla. (AP Photo/Stephen B. Morton)
