NFL Players Don't Like 'Unfashionable' Leg Pads
The Wearing Of the Green (and Gold): Take a Knee (Pad)
Hockey Goalies Are Too Big Now - The Atlantic
How the NFL is making data-driven progress on leg muscle injury
NFL, players adjusting to mandatory knee, thigh pad rule change
Bills mandating O-linemen wear knee braces
Seeking to reduce head contact, NFL mandates use of Guardian Cap
NFL will remove players from games for not wearing knee or thigh
NFL Players Don't Like New Equipment Rule - Guardian Liberty Voice