Minnesota Vikings wide receiver Percy Harvin (12) is tackled during the first half Oct. 12 at Arrowhead Stadium in Kansas City. (AP Photo/Ed Zurga)

How to stop him: Harvin becomes more dangerous in the open field, where his speed and elusiveness come into play, so the Redskins must be attentive to their assignments and be sound both in coverage and in their tackling. Said Atogwe: “Everybody has to be disciplined. Everyone has to acknowledge where he’s at, and whatever scheme we have called, we have to be accountable and play it to the best of our ability.”

Bottom line: Running back Adrian Peterson remains the workhorse, but has battled injuries of late, missing three straight games before returning last week. With Peterson sidelined, Harvin accounted for 390 yards of offense and four touchdowns. His best game came against Denver, when he recorded eight catches for 156 yards and two touchdowns. Peterson returned Sunday from an ankle injury but accounted for only 60 yards on 10 carries. An extra week could help him heal up and improve his effectiveness, but if not, Harvin could have a busy day.