Garoppolo's most extensive NFL action came against the Buffalo Bills in the regular-season finale last December, a meaningless affair for the Patriots in which the rookie entered for Brady in the second half. He completed 10-of-17 passes for 90 yards and was sacked three times.
Drawing conclusions from the 32 snaps that Garoppolo played that afternoon can be dangerous, because the Patriots sat out two key receivers that Garoppolo will have at his disposal this season (Rob Gronkowski and Julian Edelman) and held out his two best offensive linemen (tackles Nate Solder and Sebastian Vollmer).
Yet the Bills, even having been eliminated from the playoffs, treated the game as if it had meaning -- they scratched only injured defensive tackle Marcell Dareus and cornerback Stephon Gilmore -- so the contest serves as a fair indication of how opposing defenses might attack Garoppolo in September.
Garoppolo is roughly the same size as Brady but is more mobile, however the story said the Pats can expect defenses to blitz Garoppolo often. The story also said don't rule out the Pats trying to find more ways to take advantage of Graoppolo's mobility instead of simplifying the playbook. Graoppolo will face two pretty tough defenses in Pittsburgh and Buffalo to start the season before seeing Jacksonville in Week 3 and Dallas in Week 4. Matt Flynn will be the backup.