Monday update: The MRI is back and Nick Bosa has indeed torn the ACL in his left knee. The 49ers have signed Ezekiel Ansah to compete in his place the rest of this season.
Post-game update: 49ers head coach Kyle Shanahan told the media after the game the team believes Bosa tore his ACL.
UPDATE: Bosa has been ruled out for the rest of the game. No word on Thomas of yet.
UPDATE: To add injury to injury, the 49ers also just had Solomon Thomas carted off the field with a knee injury as well:
The 49ers are down to six defensive linemen. Nick Bosa and Solomon Thomas were carted off the field within a span of three plays. Both have apparent left knee injuries.— Matt Maiocco (@MaioccoNBCS) September 20, 2020