I think the bus got pretty dented up yesterday, needs some time in the body shop. Maybe a more appropriate expression for what Mac is would be "won't drive the bus off a cliff". I mean, he's not Jameis Winston bad, that's driving the bus off a cliff. But every time you hand him the keys you wonder if the bus will come back dented or not.
FWIW he didn't make ESPN's list of top 12 NFL backups this year:
We stacked the best No. 2 -- and No. 3 -- quarterbacks across the league, including Browning, Marcus Mariota and Carson Wentz.
www.espn.com