Chester listed as doubtful

Vikings RB Chester Taylor was listed as doubtful on today's injury report. By definition, that means there's only a 25 percent chance he plays.
Last week, however, the Vikings listed DT Pat Williams as doubtful for one day then upgraded him to questionable. Williams started and played Sunday in Chicago.
Taylor is nursing sore ribs. But he is clearly motivated to play Sunday, since he is from Detroit.
QB Brooks Bollinger also is listed as doubtful with a left shoulder injury.
The only other serious injury is G Artis Hicks, who is listed as questionable with an ankle injury.
C Matt Birk (neck), T Marcus Johnson (foot), TE Jermaine Wiggins (knee), Williams (knee), CB Cedric Griffin (neck), LB Napoleon Harris (wrist), P Chris Kluwe (wrist) and WR Marcus Robinson (ankle) are all probable.
For the Lions, CB Fernando Bryant is out because of a concussion.