58 Weston Richburg C

Richburg underwent offseason knee and quadriceps surgery but is expected back for training camp, Matt Maiocco of NBC Sports Bay Area reports.

Richburg's surgery was extensive and reportedly was to fix an injury he suffered in Week 4, though he missed just one game all due to the issue. Richburg's rehab is expected to run right up to training camp, but if all goes according to schedule he'll be back to action in late July or early August.

Richburg (knee) won't carry an injury designation into Monday's game against the Giants.

Richburg has been dealing with the knee issue since early October but finished the week with a full practice Saturday to avoid an injury tag. The 27-year-old should slot in to his usual starting spot at center for the 49ers.

Richburg (knee) is active for Thursday's game against the Raiders.

Richburg missed San Francisco's loss to the Cardinals in Week 8 due to a knee injury, but he appears to have fully recovered. Nick Mullens will serve as the 49ers starting quarterback and benefit from the presence of his top center.

Richburg (knee) is inactive for Sunday's game against the Cardinals.

Richburg will remain sidelined as he works to recover from a lingering knee injury. A timetable for Richburg's return remains undisclosed, and Erik Magnuson will serve as the 49ers' starting center as long as Richburg is unable to suit up.

Richburg (knee) is questionable for Sunday's game against the Cardinals, Darren Urban of the Cardinals' official site reports.

Richburg was able to practice on a limited basis to begin the week, but has been held out of practice for two consecutive days. If the starting center is unable to play against the Cardinals on Sunday, Erik Magnuson would slot into the starting lineup.