2013 Super Bowl: 5 hidden numbers you need to know
The website Pro Football Focus grades every player on every play in every game.
Based on PFF's analytics, here are five things to watch in Super Bowl XLVII:
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Bernard Pierce running right: The Ravens' emerging running back averages 6.4 yards per carry when running right and has forced 17 players to miss tackles when he goes in that direction.
Michael Oher's pass blocking: In three playoff games this season, the Ravens' right tackle has allowed a quarterback pressure once every 35.7 pass blocks. In the three previous postseasons, he allowed a pressure once every 8.1 pass blocks.
Flag magnet Bernard Pollard: The Ravens' strong safety leads NFL safeties with eight penalties this season.
Sure tackler Tarell Brown: The 49ers' cornerback has missed one tackle while making 68 stops, easily the best rate among all NFL corners.
Shutdown corner Carlos Rogers: San Francisco's other starting cornerback allows a paltry 9.3 yards per catch. That's the lowest figure among starting corners.
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