Garoppolo promptly led a pair of impressive scoring drives, capped off by touchdown passes to fullback James Develin and wide receiver Brandon LaFell as a frustrated Mallett watched from the sidelines.
Bill Belichick is one of the least predictable coaches in the NFL. He has made a habit of completely flipping depth charts during the second week of the preseason for experimental purposes.
It's foolish to suggest that Garoppolo is now locked in as Brady's top backup.
If the Patriots end up carrying just two quarterbacks, though, Mallett is the odd man out.