NFL reminds teams to follow sideline rules on face coverings
San Francisco 49ers head coach Kyle Shanahan walks on the sideline during the second half of an NFL football game against the Arizona Cardinals in Santa Clara, Calif., Sunday, Sept. 13, 2020. (AP Photo/Josie Lepe)

San Francisco 49ers head coach Kyle Shanahan walks on the sideline during the second half of an NFL football game against the Arizona Cardinals in Santa Clara, Calif., Sunday, Sept. 13, 2020. (AP Photo/Josie Lepe)

Sep. 13, 2020 06:45 PM EDT
Philadelphia Eagles head coach Doug Pederson and members of his coach staff work on the sidelines wearing mask during the second half of an NFL football game against the Washington Football Team, Sunday, Sept. 13, 2020, in Landover, Md. (AP Photo/Susan Walsh)

Philadelphia Eagles head coach Doug Pederson and members of his coach staff work on the sidelines wearing mask during the second half of an NFL football game against the Washington Football Team, Sunday, Sept. 13, 2020, in Landover, Md. (AP Photo/Susan Walsh)

Sep. 13, 2020 03:49 PM EDT
Los Angeles Rams head coach Sean McVay walks the sideline against the Dallas Cowboys in the first half of an NFL football game, Sunday, Sept. 13, 2020, in Inglewood, Calif. (Keith Birmingham/The Orange County Register via AP)

Los Angeles Rams head coach Sean McVay walks the sideline against the Dallas Cowboys in the first half of an NFL football game, Sunday, Sept. 13, 2020, in Inglewood, Calif. (Keith Birmingham/The Orange County Register via AP)

Sep. 14, 2020 12:13 AM EDT
Los Angeles Rams head coach Sean McVay yells out instructions during the first half of an NFL football game against the Dallas Cowboys Sunday, Sept. 13, 2020, in Inglewood, Calif. (AP Photo/Jae C. Hong )

Los Angeles Rams head coach Sean McVay yells out instructions during the first half of an NFL football game against the Dallas Cowboys Sunday, Sept. 13, 2020, in Inglewood, Calif. (AP Photo/Jae C. Hong )

Sep. 13, 2020 10:22 PM EDT