New Grantland Blog: The 49ers and the Quarterback Crack/Pull Sweep

My newest Grantland Blog is now up:

Indeed, as San Francisco 49ers legend Bill Walsh taught us, the best play callers do their play calling through preparation during the week, not so much on gameday as emotions soar. In other words, play calling is rarely the difference between a won and a loss.

But sometimes it is; sometimes a play call is so good — and takes such good advantage of a bad play call on the other side — that one can rightly say: That call might have won the game. So it was during the furious fourth quarter between the 49ers and the Saints last weekend. With two minutes and 11 seconds remaining, and the 49ers down 24-23, on third-and-7, 49ers coach Jim Harbaugh and offensive coordinator Greg Roman made one of the best calls of the season: A crack/pull sweep with, not a running back, but quarterback Alex Smith as the blocker.

Read the whole thing.