SATURDAY, 12:42pm: Kilgore has officially been placed on the injured reserve, effectively ending his season.
MONDAY, 8:07am: Niners head coach Jim Harbaugh confirmed last night that Kilgore suffered a broken leg, which will likely end his season, tweets Ian Rapoport of NFL.com.
An air cast was placed on Kilgore, an indication that the injury could be a serious fracture, writes Matt Barrows of the Sacramento Bee (via Twitter). Backup Dillon Farrell has taken over for Kilgore in the game.
A number of centers will be available in free agnecy if the 49ers feel they need to bring in outside help to replace Kilgore. Some options will be David Baas, Dan Koppen, Steve Vallos, Andre Gurode, Rob Turner, Lemuel JeanPierre, and Dylan Gandy, reports Adam Caplan of ESPN (via Twitter).
The player on the top of that list, Baas, could be a fit in a return to the team. However, he is dealing with injury issues himself. Caplan writes that Bass may never play again (via Twitter).
The team recently got rookie third-round pick Marcus Martin back with the team, and he completed his first full week of practice with the team. Martin is an option to be quickly acclimated to the offense, so he can be inserted into the lineup very soon, writes Maiocco (via Twitter).