49ers' Brandon Aiyuk tears ACL, MCL; Deebo Samuel in hospital - ESPN

SANTA CLARA, Calif. — Less than 24 hours after wide receiver Brandon Aiyuk injured his right knee against the Kansas City Chiefs, the San Francisco 49ers got the bad news they were expecting.

Aiyuk suffered torn anterior cruciate and medial collateral ligaments in his right knee that will require surgery and end his 2024 season after only seven games, coach Kyle Shanahan announced Monday.

Shanahan also announced that wide receiver Deebo Samuel Sr. is dealing with a form of pneumonia and is in the hospital. Samuel has some fluid in his lungs and was struggling to breathe in Sunday's game. There is no timetable for his return.

Aiyuk's injury happened with 48 seconds left in the second quarter. Quarterback Brock Purdy squeezed a pass to Aiyuk between Kansas City defensive backs Chamarri Conner and Trent McDuffie for a gain of 15 yards. As Conner and McDuffie converged on Aiyuk, his knee appeared to hyperextend.

Niners medical personnel immediately ran onto the field to tend to Aiyuk, who stayed down for a couple of minutes before slowly limping to the sideline and the blue medical tent. He was soon taken to the locker room on a cart and a return to the game was ruled out to open the third quarter.

Aiyuk had two catches for 23 yards at the time of the injury in the midst of a relatively slow start to the season. With his season over, Aiyuk will not be able to reach 1,000 receiving yards for the third straight year. He had 75 receptions for 1,342 yards and seven touchdowns on his way to a second team All-Pro nod last year.

The Niners signed Aiyuk to a four-year, $120 million extension in August after an extended contract dispute. He finishes this season with 25 catches for 374 yards and no scores.

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