Rookie tailback DeShawn Wynn, who led the Green Bay Packers in rushing over the first seven games of the season, was placed on injured reserve Tuesday and will miss the rest of the year. Wynn suffered a shoulder injury in Monday night's overtime victory at Denver. Although the X-rays taken during the game were inconclusive, further tests on Tuesday indicated that the injury was serious enough to sideline Wynn for an extended period. First-year tailback Ryan Grant, who rushed for 104 yards on 22 carries against the Broncos, will take over as the starting tailback. Grant will be the third different starting tailback this season for the Packers, whose running game statistically ranks last in the league.