San Francisco 49ers center Alex Mack is calling it a career and retiring after 13 NFL seasons, according to Bally Sports’ Michael Silver.
The news doesn’t come as too much of a surprise after head coach Kyle Shanahan hinted that Mack could be contemplating retirement after not showing up for Organized Team Activities this offseason.
“I’m going to leave that up to Alex, but I’ve got a pretty good idea,” Shanahan told reporters last week. “I think you guys do too.”
