While quarterbacks and other big-name, high-priced players get most of the attention, unlikely heroes often emerge to help their teams win in the NFL playoffs.
Three of the past four Super Bowl winners played in the wild-card round and each team got help from a surprise performer during its championship run.
Ravens cornerback Corey Graham matched his season total with two interceptions in one game against Peyton Manning, including a pick in overtime to set up the winning field goal in Baltimore's 38-35 win at Denver on Jan. 12, 2013.
One of the top defensive performances came from unknown safety Vernon Perry in a playoff win. Perry intercepted four of Dan Fouts' passes and blocked a field goal in Houston's 17-14 victory over San Diego on Dec. 29, 1979.
Here are potential unsung heroes for each team this wild-card weekend:
CARDINALS: Outside linebacker Alex Okafor led the Cardinals with eight sacks and could be the key to pressuring Cam Newton and limiting his scrambling. Mobile quarterbacks Russell Wilson and Colin Kaepernick hurt the Cardinals recently, so they have to keep Newton in check.
PANTHERS: WR Philly Brown has turned into Carolina's deep threat and has been used on running plays late in the season. While Kelvin Benjamin will likely go against Patrick Peterson, Brown's speed and playmaking skills could make the difference.
RAVENS: Cornerback Lardarius Webb has a difficult assignment covering Steelers All-Pro Antonio Brown in a matchup that could determine which team advances. Brown had an excellent season, but Webb isn't backing down.
STEELERS: RB Josh Harris had nine carries this season, but the rookie is being asked to replace the injured Le'Veon Bell. Fellow rookie Dri Archer along with newly acquired Ben Tate also are in the mix, but Harris will keep getting the ball if he's productive.
BENGALS: TE Jermaine Gresham averaged a career-low 7.4 yards per catch on 62 receptions while Pro Bowl receiver A.J. Green and Mohamed Sanu make the big plays for Cincinnati's offense. Andy Dalton likes dumping the ball off, so Gresham could be quite active.
COLTS: LB Jonathan Newsome set a franchise rookie record with 6 1/2 sacks, including two last week that built his case for more playing time. The Colts had trouble pressuring quarterbacks, so they'll need Newsome to disrupt Dalton's rhythm.
LIONS: S James Ihedigbo had a career-best four interceptions in his first season with the Lions. He is coming off being benched in the second half in last week's loss at Green Bay, so he'll have even more motivation to make plays. Ihedigbo also knows what it takes to win in the playoffs. He played for the Ravens two years ago.
COWBOYS: WR Cole Beasley is easily overlooked on an offense that includes Dez Bryant, DeMarco Murray and Jason Witten. But Beasley has a knack for making a tough catch and slipping through the defense for a key first down.
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