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FILe - In this Nov. 6, 2016, file photo, Tennessee Titans quarterback Marcus Mariota, left, fumbles the ball as he is brought down by San Diego Chargers outside linebacker Melvin Ingram during the second half of an NFL football game, in San Diego. The Chargers recovered the ball and scored a touchdown on the play. The Titans, and Mariota in particular, are doing a much better job taking care of the football having gone four straight games without a turnover. That will be crucial Sunday when they visit the Chiefs.(AP Photo/Rick Scuteri, File)