First round of roster reductions begin*

NFL teams were required to reduce their rosters to 75 players by Tuesday afternoon. Not all of the information has trickled out yet, but I thought I would share what has been reported or confirmed. I'll update this post as warranted.

Chicago Bears: Three players already were waived Monday, which brought the Bears' roster to 76. The final move was waiving injured fullback Will Ta'ufo'ou.

Detroit Lions: General manager Martin Mayhew made another of his patented something-for-nothing moves, trading offensive lineman Tyler Polumbus to the Seattle Seahawks for [*update] an undisclosed 2012 draft pick. The Lions had claimed Polumbus on waivers only last week, but the Seahawks had also placed a claim on him. Cornerback Jack Williams (knee) moved to the reserve/physically unable to perform list. *Update: Those moves got the Lions to 75 players.

Green Bay Packers: Cornerback Al Harris (knee) was moved to the reserve/PUP list, according to USA Today, meaning he isn't eligible to play until Week 7 at the earliest. As we noted earlier Tuesday, the Packers' secondary is in a bit of a crunch. *Update: Joining Harris on the PUP is safety Atari Bigby (ankle) and running back James Starks (hamstring). Running back Quinn Porter was put on season-ending injured reserve.

Minnesota Vikings: Waived were linebacker J Leman, receiver Marko Mitchell and offensive lineman Bill Noethlich. As expected, the Vikings moved receiver Sidney Rice to the reserve/PUP list. Same rules apply: Rice won't count against the Vikings' roster total but will be ineligible to play for the first six weeks of the season.