The initial prognosis indicates the 49ers caught a break with six-time Pro Bowler Joe Staley.
Staley, the team’s starting left tackle, left Sunday’s 29-27 loss to the Chargers in the second quarter with a right knee injury. Kyle Shanahan said Monday that Staley will begin this week questionable to play against the Cardinals, which indicates the injury isn’t expected to be long term.
However, the 49ers are dealing with a slew of injuries elsewhere, potentially leaving them thin against Arizona. Rookie right tackle Mike McGlinchey and center Weston Richburg are also dealing with knee injuries that have them questionable to play Sunday.