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Source: Marcus Mariota out for season with MCL sprain

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Mariota out for season with MCL sprain (1:09)

Ryen Russillo and Danny Kanell react to the news that Titans rookie QB Marcus Mariota is out for the season after suffering an MCL sprain to his right knee in Sunday's loss to the Patriots. (1:09)

Tennessee Titans quarterback Marcus Mariota is out for the season after suffering an MCL sprain to his right knee in Sunday's loss to the New England Patriots, sources told ESPN's Chris Mortensen.

However, Titans interim coach Mike Mularkey said Monday that Mariota has not been ruled out for the season. Mularkey said the sprain will keep the rookie out of Sunday's home finale with Houston, but that Mariota will be re-evaluated after that game and wants to play the season finale at Indianapolis on Jan. 3.

Mularkey said Mariota's injury is less serious than the sprained left knee that kept the quarterback out of two games earlier this season.

Mariota, the No. 2 pick in the 2015 draft out of Oregon, was hurt when sacked for the third time at 10:32 of the second quarter in a 33-16 loss at New England.

Zach Mettenberger relieved Mariota and hit on 20 of 28 passes for 242 yards, two touchdowns and two interceptions.

Information from The Associated Press was used in this report.