THREE KEY MATCHUPS: Falcons at Cardinals

Cardinals CB Patrick Peterson vs. Falcons WR Harry Douglas: Peterson, a former LSU standout and the fifth player taken in the 2011 NFL draft, perhaps is the league's top cornerback. Last season he joined Hall of Famer Rod Woodson as the only NFL players ever selected to the Pro Bowl as a defender and a kick returner. The Cardinals usually put Peterson, who has three interceptions, on the opposition's top receiver. Douglas had a career-high in receiving yards with 149 last week against Tampa Bay.

Cardinals RT Eric Winston vs. Falcons DEs Malliciah Goodman and Stansly Maponga: Winston is with his third team in three seasons. He has given up six sacks, five quarterback hits and five quarterback hurries. Rookies Goodman (35 snaps) and Maponga (22 snaps) each played a season-high in snaps against Tampa Bay. Pro Football Focus credited Goodman with two quarterback hurries in 20 rushes, while Maponga got no pressures in 17 rushes.

Cardinals WR Michael Floyd vs. Falcons CB Robert Alford: Floyd, a second-year player from Notre Dame, is tied for the team lead with 32 receptions. He has 416 yards receiving and one touchdown. Alford mostly had played at left cornerback until last week, when the Falcons moved right cornerback Desmond Trufant to the slot in nickel situations. Alford held up against some big Tampa Bay receivers. He has an interception and four pass breakups, according to the Falcons coaches' film review.