49ers still have unknowns at QB and O-line after preseason
San Francisco 49ers quarterback Trey Lance (5) is sacked by Houston Texans defensive end Jerry Hughes (55) during the first half of an NFL football game Thursday, Aug. 25, 2022, in Houston. (AP Photo/David J. Phillip)

San Francisco 49ers quarterback Trey Lance (5) is sacked by Houston Texans defensive end Jerry Hughes (55) during the first half of an NFL football game Thursday, Aug. 25, 2022, in Houston. (AP Photo/David J. Phillip)

Aug. 25, 2022 08:50 PM EDT
San Francisco 49ers quarterback Trey Lance (5) throws against the Houston Texans during the first half of an NFL football game Thursday, Aug. 25, 2022, in Houston. (AP Photo/Eric Christian Smith)

San Francisco 49ers quarterback Trey Lance (5) throws against the Houston Texans during the first half of an NFL football game Thursday, Aug. 25, 2022, in Houston. (AP Photo/Eric Christian Smith)

Aug. 25, 2022 08:27 PM EDT