John Mackey is listed as backup to Wayne Cobham at rover in the updated depth chart.
I don't think he'll play. Jared Cecchetti was on the depth chart for two weeks (if I remember correctly) before he got serious playing time. And he never tore his ACL.
Still, this is an emotional boost -- even to me as a huge Mackey fan. I already feel more confident about the Zips' hopes against Buffalo just by seeing him on that PDF.