Banks has an MCL sprain and Moore had a quadriceps strain. Aaron Banks wraps up the third of four years on his rookie deal with a career-best 65.4 PFF blocking grade and will likely profile as a starting guard in the final year of his contract next season. Moore will be a free agent this offseason and has played well in limited time in each of the last two years, he could be an intriguing low-cost addition for a team looking for a swing tackle, or perhaps a team looking to give him a chance to start.

The 49ers have been decimated in the trenches. They entered the game down starting left tackle Trent Williams. His backup, Jaylon Moore, left the game earlier. Now their starting left guard is done for the day as well. Banks was instantly ruled out, suggesting a severe knee injury. Nick Zakelj has taken over at left guard.

Kyle Shanahan told reporters after the game that the "fear" is a sprained MCL which would leave Banks out for the playoffs. Daniel Brunskill took over at left guard for the 49ers. Banks has started every game this season and had a respectable 61.8 PFF grade coming into Week 17's action.