Friday's health and safety news from the world of football:
- The Associated Press reported that St. Louis Rams coach Jeff Fisher received approval from Commissioner Roger Goodell before he hired defensive coordinator Gregg Williams, who had been on indefinite suspension because of his role in the New Orleans Saints bounty scandal. Fisher previously had worked with Williams in Tennessee and had just hired him prior to the scandal suspension in 2012.
- The Iowa City Press-Citizen reported that the University of Iowa football players will wear concussion sensors next season.
- Chicago's Crain Business reported Easton Sports, the parent company of Rosemont, Ill.,-based helmet maker Riddell Inc., sold its baseball and softball business for $330 million and plans to invest in its football and action sports brands.
- The Sudbury (Ontario) Star published an opinion column that said more research is necessary on concussions.
- Outside Magazine reported on a Canisius College study that suggests exercise rather than rest for concussion victims.
-- Bill Bradley, contributing editor