Shanahan downplays Garoppolo's rough return to action

San Francisco 49ers quarterback Jimmy Garoppolo (10) throws against the Denver Broncos during an NFL preseason football game, Monday, Aug. 19, 2019, in Denver. (AP Photo/David Zalubowski)

San Francisco 49ers quarterback Jimmy Garoppolo (10) throws against the Denver Broncos during an NFL preseason football game, Monday, Aug. 19, 2019, in Denver. (AP Photo/David Zalubowski)