Bollinger could be third QB

Vikings coach Brad Childress said QB Brooks Bollinger practiced Friday, and would serve as the third quarterback Sunday at Detroit.
Bollinger was upgraded from doubtful to questionable.
Meanwhile, Childress seemed leery of Artis Hicks being able to push off his left ankle, an indication Jason Whittle will start for a third consecutive game.
Childress, though, indicated that Marcus Johnson is healthy. But he will not be regaining his starting spot at right tackle. Childress said he is behind Mike Rosenthal and rookie Ryan Cook, confirming what many have known all season: Johnson was a big problem out there.