Posted by ESPN.com's Kevin Seifert
It appears Madieu Williams' consecutive games streak will end at two this weekend. The Minnesota safety is doubtful for Sunday's game at Tampa Bay because of a left shoulder injury, one that apparently occurred Wednesday during the Vikings' special teams practice.
Williams missed the first seven games of the season because of a neck injury. But he had played well since his return -- intercepting a pass in the end zone Nov. 2 against Houston and tackling Green Bay receiver Donald Driver short of a first down on the penultimate play of last Sunday's 28-27 victory over the Packers.
Coach Brad Childress said he will give Williams another 48 hours before making a final decision on his status. And it should be noted that defensive end Jared Allen played against the Packers after being designated as doubtful on the injury report. By definition, however, there is a 75 percent chance that Williams won't play against the Bucs.
Speaking to Minnesota reporters, Williams said he took a "nasty" fall while lunging for a ball during the special teams practice.
After losing nickel back Charles Gordon (ankle) for the season, the Vikings are on track to enter Sunday's game without two of their top five defensive backs. Rookie Tyrell Johnson would replace Williams in the starting lineup, while veteran Benny Sapp will take over in the nickel for Gordon.