From healthy, first-place surprise to battered and struggling, the Washington Redskins had their fortunes take another dive Monday when running back Tim Hightower was declared out for the season with a torn knee ligament and receiver Santana Moss underwent hand surgery that is expected to sideline him for 5-7 weeks. That makes five starters lost to significant injuries over the last two weeks, coinciding with a two-game losing streak and a quarterback switch.