Injuries to McCaffrey, Horn sour Panthers' 3-0 start
Carolina Panthers running back Christian McCaffrey (22) catches a pass as Houston Texans cornerback Vernon Hargreaves III (26) tackles him during the first half of an NFL football game Thursday, Sept. 23, 2021, in Houston. (AP Photo/Eric Christian Smith)

Carolina Panthers running back Christian McCaffrey (22) catches a pass as Houston Texans cornerback Vernon Hargreaves III (26) tackles him during the first half of an NFL football game Thursday, Sept. 23, 2021, in Houston. (AP Photo/Eric Christian Smith)

Sep. 23, 2021 08:59 PM EDT
Carolina Panthers quarterback Sam Darnold (14) breaks away from Houston Texans defensive tackle Roy Lopez (91) during the second half of an NFL football game Thursday, Sept. 23, 2021, in Houston. (AP Photo/Eric Christian Smith)

Carolina Panthers quarterback Sam Darnold (14) breaks away from Houston Texans defensive tackle Roy Lopez (91) during the second half of an NFL football game Thursday, Sept. 23, 2021, in Houston. (AP Photo/Eric Christian Smith)

Sep. 23, 2021 10:32 PM EDT
Carolina Panthers running back Christian McCaffrey (22) leaves the field during the first half of an NFL football game against the Houston Texans Thursday, Sept. 23, 2021, in Houston. (AP Photo/Justin Rex)

Carolina Panthers running back Christian McCaffrey (22) leaves the field during the first half of an NFL football game against the Houston Texans Thursday, Sept. 23, 2021, in Houston. (AP Photo/Justin Rex)

Sep. 23, 2021 09:26 PM EDT