Rivera decides to rest Newton, other star players vs. Bills
Carolina Panthers quarterback Cam Newton poses with children before the first half an NFL preseason football game against the Buffalo Bills, Friday, Aug. 16, 2019, in Charlotte. (AP Photo/Brian Blanco)

Carolina Panthers quarterback Cam Newton poses with children before the first half an NFL preseason football game against the Buffalo Bills, Friday, Aug. 16, 2019, in Charlotte. (AP Photo/Brian Blanco)

Aug. 16, 2019 05:56 PM EDT
Carolina Panthers quarterback Cam Newton jokes with a player during an NFL football training camp with the Buffalo Bills in Spartanburg, S.C., Tuesday, Aug. 13, 2019. (AP Photo/Gerry Broome)

Carolina Panthers quarterback Cam Newton jokes with a player during an NFL football training camp with the Buffalo Bills in Spartanburg, S.C., Tuesday, Aug. 13, 2019. (AP Photo/Gerry Broome)

Aug. 13, 2019 01:01 PM EDT
Carolina Panthers quarterback Cam Newton hands off to Christian McCaffrey during an NFL football training camp with the Buffalo Bills in Spartanburg, S.C., Wednesday, Aug. 14, 2019. (AP Photo/Gerry Broome)

Carolina Panthers quarterback Cam Newton hands off to Christian McCaffrey during an NFL football training camp with the Buffalo Bills in Spartanburg, S.C., Wednesday, Aug. 14, 2019. (AP Photo/Gerry Broome)

Aug. 14, 2019 12:05 PM EDT
Carolina Panthers quarterback Cam Newton (1) laughs beside Christian McCaffrey (22) during an NFL football training camp with the Buffalo Bills in Spartanburg, S.C., Tuesday, Aug. 13, 2019. (AP Photo/Gerry Broome)

Carolina Panthers quarterback Cam Newton (1) laughs beside Christian McCaffrey (22) during an NFL football training camp with the Buffalo Bills in Spartanburg, S.C., Tuesday, Aug. 13, 2019. (AP Photo/Gerry Broome)

Aug. 13, 2019 01:19 PM EDT
Carolina Panthers quarterback Cam Newton, right, speaks with Buffalo Bills' Kurt Coleman while Bills' Mike Love (56) and Shaq Lawson (90) look on during an NFL football training camp in Spartanburg, S.C., Tuesday, Aug. 13, 2019. (AP Photo/Gerry Broome)

Carolina Panthers quarterback Cam Newton, right, speaks with Buffalo Bills' Kurt Coleman while Bills' Mike Love (56) and Shaq Lawson (90) look on during an NFL football training camp in Spartanburg, S.C., Tuesday, Aug. 13, 2019. (AP Photo/Gerry Broome)

Aug. 13, 2019 01:05 PM EDT