Huge bummer. He's been fun to watch. Next man up, WR depth will be tested.
Harbaugh: Tarik Black is going to be out. Will have surgery. Has crack on the outside of his foot. Not sure if he will be back this seasoon— Sam Webb (@SamWebb77) September 18, 2017
Edit: Some slightly better news:
Harbaugh on Ty Issac: I think he is going to be okay— Sam Webb (@SamWebb77) September 18, 2017