23
/
en
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
May 31, 2020
Create
Public Timelines
Library
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
Download
Export
Duplicate
Embed
Edit
156 views
0
0
Football Final
Created by
mitch
⟶ Updated 14 Dec 2017 ⟶
List of edits
Comments
Events
Single Bar Helmets Banned in NFL
First Soft Leather Helmet
Ridell Develops First Plastic Helmet
First year NFL requires players to wear helmets
First year all NFL Players wore Facemasks on helmets
First Football game November 6, 1869
First official rules of Football written
NFL starts issueing plastic helmets
Riddell inserts air cushions to absorb impact
First Polycarbonate Helmet
Riddell develops first helmet to reduce concussions
Luke Kuechely wears Q-Collar in NFL game
Crack-back Block Prohibited
Defenseless Player Rule
Rule that Ejects anyone Who Spears
Rule Prohibits Chop Block
NFL Release Scientific Paper Denying Brain Damage in Football
Dr. Omalu Discovers CTE
