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LAC at SF 2017-08-31
Photo gallery for game: LAC at SF 2017-08-31

San Francisco 49ers quarterback C.J. Beathard throws against the Los Angeles Chargers during the first half of a preseason NFL football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. (AP Photo/John Hefti)

San Francisco 49ers cornerback Asa Jackson, second from right, is hugged by a teammate after intercepting a Los Angeles Chargers pass during the first half of an NFL preseason football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. (AP Photo/John Hefti)

Los Angeles Chargers coach Anthony Lynn, left, talks to San Francisco 49ers coach Kyle Shanahan at the end of a preseason NFL football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. The 49ers won 23-13. (AP Photo/D. Ross Cameron)

Los Angeles Chargers players walk off the field at the end of a preseason NFL football game against the San Francisco 49ers Thursday, Aug. 31, 2017, in Santa Clara, Calif. The 49ers won 23-13. (AP Photo/John Hefti)

San Francisco 49ers running back Joe Williams (32) runs past Los Angeles Chargers' Isaac Rochell (98) and Ryan Carrethers (90) during the second half of a preseason NFL football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. (AP Photo/D. Ross Cameron)

San Francisco 49ers tight end Cole Hikutini, right, makes a catch next to Los Angeles Chargers' Rayshawn Jenkins during the second half of a preseason NFL football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. (AP Photo/John Hefti)

Los Angeles Chargers quarterback Cardale Jones throws under pressure from San Francisco 49ers defensive back Don Jones during the first half of a preseason NFL football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. (AP Photo/D. Ross Cameron)

Los Angeles Chargers coach Anthony Lynn watches from the sideline as his team plays the San Francisco 49ers during the first half of a preseason NFL football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. (AP Photo/John Hefti)

San Francisco 49ers' Victor Bolden Jr., front, celebrates after returning a punt for a touchdown against the Los Angeles Chargers during the first half of a preseason NFL football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. (AP Photo/D. Ross Cameron)

San Francisco 49ers' Victor Bolden Jr. returns a punt for a touchdown against the Los Angeles Chargers during the first half of a preseason NFL football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. (AP Photo/John Hefti)

San Francisco 49ers quarterback C.J. Beathard, second from left, is hugged by teammates after scoring a rushing touchdown against the Los Angeles Chargers during the first half of a preseason NFL football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. (AP Photo/D. Ross Cameron)

San Francisco 49ers quarterback C.J. Beathard, right, runs for a touchdown against the Los Angeles Chargers during the first half of a preseason NFL football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. (AP Photo/D. Ross Cameron)

Los Angeles Chargers quarterback Cardale Jones prepares to throw against the San Francisco 49ers during the first half of a preseason NFL football game Thursday, Aug. 31, 2017, in Santa Clara, Calif. (AP Photo/John Hefti)