FILE - San Francisco 49ers defensive coordinator Robert Saleh is shown during an NFL football game against Arizona Cardinals, in Santa Clara, Calif., in this Sept. 13, 20...

(AP Photo/Elaine Thompson)SANTA CLARA, Calif. – The San Francisco 49ers will be without quarterback Jimmy Garoppolo and All-Pro tight end George Kittle for an extended pe...

The NFL Players Association president cited the league’s official injury reports from 2012-2018 to state his case that natural grass fields provide a much lower risk for ...