150: 49ers: The anatomy of a big play -- Matt Breida's game-opening TD

The 49ers remained unbeaten with a 31-3 victory over the Cleveland Browns in Week 5. Here's an in-depth look at the play that got the 49ers off to such a great start -- Matt Breida's 83-yard touchdown run, through the eyes of Kyle Shanahan and those who delivered the key blocks.