Sando is reporting that NFL Network is reporting that Hasselbeck's MRI reveals a Grade 2 knee sprain. It's a mild tear in the ligament -- not as severe as it could be, but not a cakewalk either. We are looking at his being out 2-4 weeks. This suggests a return to action versus either St. Louis, San Francisco or Green Bay.
Update [2006-10-23 13:44:3 by Shrug]: Sando updates his armchair prognosis -- he sees Hass out for a month at this point.