Sports Biz with Darren Rovell
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The 10 Best-Selling NFL Jerseys 2011

Popular for both his on-the-field play and his characteristic hairstyle, Pittsburgh Steelers safety Troy Polamalu is another perennial fan favorite. Last year's jersey sales leader continued his momentum this year, and it's easy to see why. Pittsburgh is a blue collar town, and Polamalu is a blue collar player. With Ben Roethlisberger's troubles, most new  jersey sales in Pittsburgh are Polamalu's number 43.

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3. Troy Polamalu, Pittsburgh Steelers

Popular for both his on-the-field play and his characteristic hairstyle, Pittsburgh Steelers safety Troy Polamalu is another perennial fan favorite. Last year's jersey sales leader continued his momentum this year, and it's easy to see why. Pittsburgh is a blue collar town, and Polamalu is a blue collar player. With Ben Roethlisberger's troubles, most new jersey sales in Pittsburgh are Polamalu's number 43.

Photo: George Gojkovich | Getty Images