Green Bay Packers wide receiver Davante Adams, right, catches a pass against San Francisco 49ers middle linebacker Fred Warner, rear, and cornerback Jimmie Ward (1) during the second half of an NFL football game in Santa Clara, Calif., Sunday, Sept. 26, 2021. (AP Photo/Jed Jacobsohn)

San Francisco 49ers head coach Kyle Shanahan speaks at a news conference after the Green Bay Packers defeated the 49ers in an NFL football game in Santa Clara, Calif., Sunday, Sept. 26, 2021. (AP Photo/Tony Avelar)

San Francisco 49ers fullback Kyle Juszczyk, top, runs toward the end zone to score against Green Bay Packers strong safety Adrian Amos during the second half of an NFL football game in Santa Clara, Calif., Sunday, Sept. 26, 2021. (AP Photo/Tony Avelar)

San Francisco 49ers running back Trey Sermon (28) runs against the Green Bay Packers during the second half of an NFL football game in Santa Clara, Calif., Sunday, Sept. 26, 2021. (AP Photo/Tony Avelar)

San Francisco 49ers' Trenton Cannon returns a kickoff against the Green Bay Packers during the first half of an NFL football game in Santa Clara, Calif., Sunday, Sept. 26, 2021. (AP Photo/Tony Avelar)