Whitehurst completed two of eight passes for eight yards and an interception Sunday against the Jaguars, coming on twice for Matt Hasselbeck, who was eventually knocked out with a rib injury.
Hasselbeck threw for 252 yards before exiting the game, and while Whitehurst wasn't able to get much going, he could be forced into action if Hasselbeck has to miss any time. On the other hand, Andrew Luck could return from his abdomen and kidney issues in Week 15 against the Texans, which would make Hasselbeck's availability moot with regard to Whitehurst.