In his best game of the season, Brandon Aiyuk finished with 14.7 fantasy points -- eight receptions, 147 yards. That was in Week 5 versus the Arizona Cardinals. In his worst game of the season -- last week against the Kansas City Chiefs -- Aiyuk finished with 2.3 fantasy points. His stat line: two catches, 23 yards, on six targets.

The Brandon Aiyuk announcement from the 49ers comes at one of the worst possible times for the team, as they are 3-4 and already wobbling in part due to the injury to Christian McCaffrey ... and now get set to host the Dallas Cowboys.

Brandon Aiyuk is out for the season. Deebo Samuel has pneumonia without a timetable to return. Jauan Jennings has a hip injury that cost him Week 7; 49ers coach Kyle Shanahan said on Sunday he "hopes" he's back for Week 8 but sounded unsure when his name was brought up again on Monday.