NFL makes knee and thigh pads mandatory for 2013-14 season

Section 160 – 11-man football exceptions - tapps

New NFL rules: Leg, thigh pads are mandatory to protect players

NFL says players must wear thigh, knee pads in 2013 - ESPN : r/nfl

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New NFL rules: Leg, thigh pads are mandatory to protect players

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NFL says players must wear thigh, knee pads in 2013 - ESPN : r/nfl

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NFL owners could vote to mandate thigh, knee pads

Players, some grudgingly, accept new NFL rule requiring knee, thigh pads - The Washington Post

League mandates use of knee and thigh pads, Sports

NFL making thigh and knee pads mandatory in '13 – Macomb Daily

New NFL rule will require thigh and knee pads, and some Cleveland Browns are among the players who don't like it

A former junior college star, Broncos receiver Tim Patrick continues to prove his worth in the NFL, Sports

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