The San Francisco 49ers' fears about the injury to rookie defensive end Mykel Williams were confirmed Monday afternoon when a source told ESPN's Jeremy Fowler that Williams tore the anterior cruciate ligament in his right knee.

The San Francisco 49ers have been winning games despite significant injuries to key players. On Sunday, first-round pick Mykel Williams suffered a season-ending knee injury in a victory over the New York Giants.

NFL.com says teams are calling on Jauan Jennings, but with Aiyuk still ramping up and Shanahan signaling stability, a 49ers trade is unlikely.

San Francisco 49ers running back Brian Robinson Jr. found the end zone for the first time this year on Sunday, and his teammates

Late in the fourth quarter, first-round pick defensive end Mykel Williams went down with a right knee injury. Afterwards, coach Kyle Shanahan told reporters that they fear Williams injured his ACL. A torn ACL would sideline Williams for the remainder of the season.

The San Francisco 49ers are heading into Tuesday’s trade deadline needing more than a minor transaction. They don’t need a single, solitary move — they need to be wheeling and dealing like an over-caffeinated auctioneer. It will take four or five trades to replace all that this roster has lost over the past few weeks.

In Week 6, Malik Mustapha came back. The 49ers used Sigle in a platoon with Mustapha for two games, but once Mustapha took his role back over, there were no more snaps for Sigle. The 49ers move Ji’Ayir Brown into the starting lineup and slide Jason Pinnock into the nickel, making Sigle the fourth safety.

The New York Giants play host to the San Francisco 49ers on Sunday in a battle of teams missing multiple star players on both sides of the ball.