Bartch suffered an undisclosed injury during San Francisco's practice Tuesday, Nick Wagoner of ESPN.com reports.

EDGE Analysis

Bartch exited practice and didn't return, while the severity of his injury is currently unknown. The 27-year-old is expected to serve as the team's starting left guard during the upcoming campaign, but if he ends up being forced to miss extended time, Nick Zakelj will likely start in his place.