How long should it take to develop a team into a Manball team?
To understand this question better, I scraped some data about Stanford from their first three year's under Harbaugh; recall that before that, Stanford was a bit of a train wreck. Thus, you'd think that if our goal was to be like that, perhaps we'd be able to develop to Stanford's level of manballishness in a similar time period.
Here is a graph of Stanford's run game over the first three years under Harbaugh:
Click here for the full-sized image.
The left y-axis (in darkred) shows the average yards per carry; the right y-axis (gray) shows total rush yards. I've just selected a subset of games (those in the Pac10... er... 12?) to get a consistent snapshot against a certain level of competition.
As you can see, the first year was a train wreck: only one game with a decent total number of yards rushing (Oregon), and most games with a low average (only two around 4 per rush).
However, by year two, Manball was in effect: many games with hundreds of rush yards, and many with high yards per attempt. Wow! Year 2 and already rolling. Year three, a better year record-wise, was similar (perhaps a bit better).
Now, the contrast: Michigan in the first three Hoke/Borges years.
Again, click here for the full-sized image. Similarly, just showing Big 10 competition.
First year was all over the map, but some big games. Next year, the first few games were great. Then, Denard got hurt. And after that, a much less robust rushing attack, hovering around 4 YPC, and few games with substantial rushing yardage. And now, 2013, with another step backwards: not many total yards, and an even lower YPC.
Of course, the jury is still out on this year, and there is a lot of football left. But if the rushing game looks like it has for the beginning of this year...