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Daniel Kilgore to have season-ending surgery on Tuesday

49ers head coach Jim Harbaugh confirmed that Daniel Kilgore season is over. He will undergo surgery on Tuesday, and the team will begin figuring out his replacement after that. We consider the options.

Kim Klement-USA TODAY Sports

San Francisco 49ers head coach Jim Harbaugh met with the media on Monday, and he announced that Daniel Kilgore will undergo season-ending surgery on Tuesday. Coach Harbaugh said the injury was similar to Ian Williams's fracture last year.

When asked about competition, Coach Harbaugh said that Marcus Martin will have the first opportunity to take over the center job. Dillon Farrell got center snaps last night, but it would seem like the team is intent on keeping him in that reserve role. Joe Looney can play center as well, but he also seems like an emergency option.

Martin played center in college, and was considered among the top couple centers in this year's draft. He came to the 49ers recovering from a dislocated kneecap. He suffered a similar injury at the end of the preseason, but has been completely off the injury report for a week now. The 49ers do not return to the practice field until next Monday (partially to do with CBA rules), but in the meantime, I'd imagine he will spend plenty of time studying his playbook and getting ready to work intensively with Colin Kaepernick next week.

The 49ers will place Kilgore on injured reserve at some point, opening up a roster spot. Their offensive line depth chart stands as follows:

OT: Joe Staley, Anthony Davis, Jonathan Martin
OG: Mike Iupati, Alex Boone, Joe Looney
C: Marcus Martin, Dillon Farrell

The team's practice squad includes offensive tackle Carter Bykowski and guard Andrew Tiller. The team could elect to sign one of them to the 53-man roster, and of course could find a free agent. However, it is also possible that if they believe they are healthy enough heading out of the bye and into Week 9, they stick with an 8-man rotation. Given all the injuries I would be a little bit surprised, but anything is possible at this point.

As it currently stands, Looney can play all three interior positions, Jonathan Martin can play both tackle positions, and both guard positions in a pinch, and Dillon Farrell can play all five positions. If Anthony Davis and Mike Iupati are in good shape coming out of the bye (as one would expect), maybe the 49ers add some secondary depth or linebacker depth (depending on Patrick Willis's injury).