Sharper injured

Posted by ESPN.com's Kevin Seifert
MINNEAPOLIS -- Minnesota safety Darren Sharper is having his right ankle looked at after leaving the game twice in a three-play span.

Sharper's been replaced by rookie Tyrell Johnson, who was a part-time starter earlier this season but has been working on special teams for most of the past two months.

You never know who is responsible for coverage, but Johnson was the safety help on a 34-yard pass to receiver DeSean Jackson that put Philadelphia in scoring position.