The Tennessee Titans could enter Sunday's game at Houston without either of their starting offensive tackles.

Neither Taylor Lewan nor Michael Oher has practiced all week. They're listed as questionable on the Titans' injury report, and Titans coach Ken Whisenhunt says both will be game-time decisions.

Lewan sprained an ankle Sunday against Philadelphia. Oher has a toe injury. If Lewan and Oher are unavailable, backups Will Svitek and Byron Stingily would start instead. Tennessee already is without starting center Brian Schwenke, who was placed on injured reserve this week with a knee injury.

On defense, the Titans ruled out linebacker Kamerion Wimbley with a hamstring injury.

Safety Michael Griffin (shoulder) practiced Friday and expects to play. He's listed as questionable. Safety Marqueston Huff (hamstring) also is questionable.